Quiz 23- Chemistry-General Science: General Knowledge Question & Answers

221 Q) "The role of the calcinations in metallurgical process is "

(a) to remove moisture

(b) to decompose carbonate into oxide

(c) to remove organic matter

(d) All of the above

Show Answer

D

222 Q) "Colligative properties are properties of solutions that depend on "

(a)the mass of the molecules present in the solution

(b)the size of the molecules present in the solution.

(c)the number of ions/molecules in a given amount of solvent

(d)None of the above

Show Answer

C

223 Q) "Which of the following statements in connection with the properties of water is/are correct? 

1 .Water has higher specific heat in comparison with other liquid. 

2.Water has no dipole moment. 

3.Water has low heat of vaporisation. 

Select the correct answer using the codes given below"

(a) Only 1

(b) 2 and 3

(c) 1 and 3

(d) Only 3

Show Answer

A

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Quiz 22- Chemistry-General Science: General Knowledge Question & Answers

211 Q) "Assertion (A) The natural rubber is the polymer of m-isoprene. 

Reason (R) Poly-rram-isoprene is called Gutta-percha."

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

Show Answer

B

212 Q) In the modern food processing industries, the foodstuffs are found to be preserved in the brine solution. What is the brine solution?

(a)Saturated solution of MgCl2

(b)Saturated solution of carbonic acid

(c)Saturated solution of NaCl

(d)Saturated solution of FeCl3

Show Answer

C

213 Q) Which one of the following is associated with the formation of brown air in traffic congested cities?

(a)Sulphur dioxide

(b) Nitrogen oxide

(c)Carbon dioxide

(d)Carbon monoxide

Show Answer

B

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Quiz 21- Chemistry-General Science: General Knowledge Question & Answers

201 Q) Which one among the following metals is used in fireworks to make a brilliant white ligh

(a) Sodium

(b)Magnesium

(c) Aluminium

(d)Silver

Show Answer

B

202 Q) Match the Following

(Item)	(Toxic substance)
A. CFL lamp	1. Nitrogen oxide
B. Automobile battery	2. Phthalates
C. Polymer	3. Lead
D. Diesel engine	4. Mercury

(a) 2 4 3 1

(b) 2 3 4 1

(c) 4 3 2 1

(d) 4 2 3 1

Show Answer

C

203 Q) "Consider the following statements 

I. CFLs have a life expectancy of 10000 hrs if used 3 hrs per day. 

II.CFLs help in reducing global warming. 

III.CFLs contain mercury which is very harmful to living beings. 

IV. CFLs should be disposed of properly and recycled. 

Which of the statements given above are correct?"

(a) I, II, III and IV

(b) I, II and III

(c) II, III and IV

(d) III and IV

Show Answer

A

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Quiz 20- Chemistry-General Science: General Knowledge Question & Answers

191 Q) "Consider the following statements 

I.Fuels with low octane numbers are ideal for diesel engines. 

II.Use of gasoline with low octane numbers may lead to the problem of engine knocking. 

Which of the statements given above is/are correct?"

(a) Only I

(b) Only II

(cj Both I and II

(d) Neither I nor II

Show Answer

C

192 Q) "Two atoms are said to be isotopes if "

(a)they have the same atomic number, but different mass numbers

(b)they have the same number of neutrons, but different mass numbers

(c)the sum of the number of protons and neutron is the same, but the number of protons is different

(d)they have the same number of neutrons, but different modes of radioactive decay

Show Answer

A

193 Q) "Consider the following statements 

I.Phosgene is a poisonous compound forms from chloroform in the presence of UV-rays and 02. 

II.It is used for the synthesis of precursor for the poly-urethane polymer. Which of the statements given above is/are correct?"

(a)Only I

(b) Only II

(c) Both I and II

(d) Neither I nor II

Show Answer

C

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Quiz 19- Chemistry-General Science: General Knowledge Question & Answers

181 Q) "To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over uranium? 
1. Thorium is far more abudant in nature than uranium 
2. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural uranium. 
3. Thorium produces less harmful waste compared to uranium. 
Which of the statement (s) given above is/are correct?"

(a) Only 1
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3

Show Answer

D

182 Q) "Consider the following gases 
I. Water vapour 
 II. Nitrous oxide 
 III. CFC 
IV. Methane 
Which of the gases given above are “Green House Gases (GHGs)”? "

(a) All of these
(b) I, II and III
(c) II and III
(d) II and IV

Show Answer

A

183 Q) Which one of the following compounds was responsible for the epidemic form of disease called'Minamata Disease'?

(a)A lead compound
(b)A mercury compound
(c)A sulphur compound
(d)A fluorine compound

Show Answer

B

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Quiz 18- Chemistry-General Science: General Knowledge Question & Answers

171 Q) "Consider the following substances 

I. Toilet soap 

II. Toothpaste 

III. Vinegar 

IV. Baking soda 

Which of the substances given above is/are mixture in nature?"

(a) I, II, III and IV

(b) I, II and III

(c) I and III

(d) III and IV

Show Answer

B

172 Q) Gold is mainly extracted by

(a) carbon reduction

(b) self reduction

(c) electrolytic method

(d) Arndt forrest cyanide method

Show Answer

D

173 Q) "Consider the following statements 

I.Cloud seeding is an attempt to change the amount of precipitation. 

II.The most common chemicals used for cloud seeding include silver iodide, dry ice and liquid propane. 

Which of the statements given above is/are correct?"

(a) Only I

(b) Only II

(c) Both I and II

(d) Neither I nor II

Show Answer

C

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Quiz 17- Chemistry-General Science: General Knowledge Question & Answers

161 Q) Vinegar is used as a condiment, and in the pickling of vegetables and other foods. What is the constituent of vinegar?

(a)Butanoic acid

(b) Methanoic acid

(c) Ethanoic acid

(d) Hexanoic acid

Show Answer

C

162 Q) Which one of the following is used to measure the combustion quality of diesel fuel during compression ignition?

(a)Octane number

(b) Cetane number

(c) Iodine number

(d) Polenske number

Show Answer

B

163 Q) "Consider the following statements 

I.Sodium thiosulphate is used in both film and photographic paper processing. 

II.Sodium thiosulphate is used as an antidote to cyanide poisoning. 

Which of the statements given above is/are correct?"

(a) Only I

(b) Only II

(c)Both I and II

(d) Neither I nor II

Show Answer

C

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Quiz 16- Chemistry-General Science: General Knowledge Question & Answers

151 Q) Which one of the following is the major component of the photochemical smog'?

(a) Carbon dioxide

(b) Ozone

(c)Carbon monoxide

(d)Nitrogen

Show Answer

B

152 Q) As which one of the following, does carbon occur in its purest form in nature?

(a) Diamond

(b) Graphite

(c) Carbon black

(d) Coal

Show Answer

C

153 Q) "The pH of fresh groundwater slightly decreases upon exposure to air because "

(a) carbon dioxide from air is dissolved in the water

(b) oxygen from air is dissolved in the water

(c) the dissolved carbon dioxide of the groundwater escapes into air

(d) the dissolved oxygen of the groundwater escapes into air

Show Answer

A

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Quiz 15- Chemistry-General Science: General Knowledge Question & Answers

141 Q) If four balloons A, B, C and D are filled with hydrogen, oxygen, helium and nitrogen gases respectively and left in air, which balloon reaches to the highest distance from the Earth?.

(a) Balloon A

(b) Balloon B

(c) Balloon C

(d) Balloon D

Show Answer

B

142 Q) " Assertion (A) Methane is one of the major GHGs. 

 Reason (R) Methane has more potential for global warming than carbon dioxide."

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

Show Answer

A

143 Q) Commercially vulcanisation of rubber involves

(a) sulphur

(b)carbon

(c) phosphorus

(d)selenium

Show Answer

A

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Quiz 14- Chemistry-General Science: General Knowledge Question & Answers

131 Q) "Which one of the following is correct? Setting of plaster of Paris is "

(a)dehydration

(b)oxidation with atmospheric oxygen

(c)hydration leading to another hydrate

(d)combination with atmospheric carbon dioxide

Show Answer

D

132 Q) At the very low temperature, ice forms

(a)tetrahedral crystal

(b)cubic crystal

(c)hexagonal crystal

(d)None of the above

Show Answer

B

133 Q) Food wrapped in newspaper is likely to get contaminated with

(a) aluminium

(b) lead

(c) iron

(d) magnesium

Show Answer

B

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Quiz 13- Chemistry-General Science: General Knowledge Question & Answers

121 Q) Which one of the following oxides is the most abundant in Earth crust?

(a) Na2O

(b) CaO

(c) MgO

(d) SiO2

Show Answer

D

122 Q) "Natural Opal which is commonly used as gemstones in many countries is mainly "

(a)a hydrated calcium compound

(b)a magnesium compound

(c) a sulphur compound

(d)a hydrated silica

Show Answer

D

123 Q) Sacrificial anode protects Iron or ships, underground pipelines etc. from rusting, a process known as cathodic protection. Which one of the following metals cannot be used as a sacrificial anode?

(a) Tin

(b) Aluminium

(c) Zinc

(d) Magnesium

Show Answer

A

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Quiz 12- Chemistry-General Science: General Knowledge Question & Answers

111 Q) A person is weak, sterile and has very poor eyesight. These are the symptoms because of a pollutant

(a) copper

(b)mercury

(c) magnesium

(d) lead

Show Answer

A

112 Q) In modern days, which one of the following chemical compounds is used for the hair setting in beauty parlour/ salon?

(a) A phosphate compound

(b) A sulphur compound

(c) A magnesium compound

(d) A bicarbonate compound

Show Answer

B

113 Q) "The gas used in a refrigerator is "

(a)cooled down on flowing

(b)heated up on flowing

(c)cooled down when compressed

(d)cooled down when expanded

Show Answer

D

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Quiz 11- Chemistry-General Science: General Knowledge Question & Answers

101 Q) In terms of magnetic properties oxygen belongs to

(a) magnetic material

(b) ferromagnetic materials

(c) paramagnetic materials

(d) diamagnetic materials

Show Answer

C

102 Q) "Consider the following statements 

I.Alums are the double salts of sulphates of monovalent and divalent cations. 

II.Alum is used in the purification of drinking water. 

Which of the statements given above is/are correct?"

(a) Only I

(b)Only II

(c) Both I and II

(d) Neither I nor II

Show Answer

B

103 Q) The pure form of carbon is

(a) diamond

(b) graphite

(c) charcoal

(d) fullerene

Show Answer

A

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Quiz 10- Chemistry-General Science: General Knowledge Question & Answers

91 Q) "Consider the following statements 

I.A chalcogenide glass is a glass containing sulphur, selenium or tellurium. 

II.Chalcogenide glass form the basis of re-writable CD and DVD solid-state memory technology. Which of the statements given above is/are correct?"

(a)Only I

(b) Only II

(c) Both I and II

(d) Neither I nor II

Show Answer

C

92 Q) Match the Following

List 1	List II
(Elements)	(Colour on flame)
A. Barium	1. Yellow
B. Sodium	2. Greenish
C. Silver	3. Turns black
D. Lead  Codes	4. Apple green

(a) 2 4 3 1

(b) 2 3 4 1

(c) 4 3 1 2

(d) 4 1 3 2

Show Answer

D

93 Q) "Which of the following is correct for the semiconductor? "

(a) A large gap between filled band and vacant band

(b) An impurity band present between filled band and vacant band.

(c) A small gap between filled band and vacant band.

(d) Filled band and vacant band overlap with one another

Show Answer

B

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Quiz 9- Chemistry-General Science: General Knowledge Question & Answers

81 Q) Which one of the following pollutants contains in water due to modern agricultural practices lead to 'methemoglobinaemia' when combines with our blood haemoglobin?

(a)Bicarbonates

(b)Sulphates

(c) Phosphates

(d)Nitrates

Show Answer

D

82 Q) "What is the role of positive catalyst in a chemical reaction? "

(a)It increases the rate of reaction

(b)It decreases the rate of reaction

(c)It increases the yield of the products

(d) It provides better purity of the products

Show Answer

C

83 Q) The pH of fresh groundwater slightly decreases upon exposure to air because

(a) carbon dioxide from air is dissolved in the water

(b) oxygen from air is dissolved in the water

(c) the dissolved carbon dioxide of the groundwater escapes into air

(d) the dissolved oxygen of the groundwater escapes into air

Show Answer

A

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Quiz 8- Chemistry-General Science: General Knowledge Question & Answers

71 Q) The most abundant metal in the Earth's crust is

(a) Si

(b) Fe

(c) A1

(d) Cu

Show Answer

C

72 Q) A pale blue gas with a fish-like odour restores the colour of a blackened lead painting. The gas is also used as rocket fuel. It is

(a)oxygen

(b)ammonia

(c) sulphur dioxide

(d) ozone

Show Answer

B

73 Q) Which one of the following is used to slow down the speed of the neutrons in the nuclear reactor?.

(a)Controlling rod

(b) Moderator

(b)Coolant

(d) Accelerator

Show Answer

B

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Quiz 7- Chemistry-General Science: General Knowledge Question & Answers

61 Q) "The bleaching action of chlorine occurs in the presence of "

(a) moisture

(b) sunlight

(c) pure oxygen

(d) pure sulphur dioxide

Show Answer

A

62 Q) Which one among the following polymers is re-synthesised from the naturally occurring polymer?

(a) Kevlar

(b) Teflon

(c) Rayon

(d) Cellulose

Show Answer

C

63 Q) Which one of the following chemicals released along with domestic wastes has caused the phenomenon of Eutrophication' which leads to high productivity of water bodies?

(a)Phosphates and nitrates

(b)Sulphates and chlorides

(c)Chlorides and carbonates

(d)Bicarbonates and carbonates

Show Answer

A

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Quiz 6- Chemistry-General Science: General Knowledge Question & Answers

51 Q) "Which one of the following is used as a mordant in dyeing and tanning industry? "

(a) Magnesium oxide

(b) Magnesium chloride

(c) Magnesium sulphate

(d) Magnesium carbonate

Show Answer

C

52 Q) Which one of the following is the reason for keeping the chloroform in brown-tinted glass containers?

(a)Its brilliance colour hurts eyes

(b)Its deep red colour is piercing

(c)With UV-rays and 02, it forms poisonous gas phosgene

(d)With IR-rays, it forms a poisonous cyanide

Show Answer

C

53 Q) "Consider the following statements 

I.Acid rain is caused by emission of carbon dioxide, sulphur dioxide and nitrogen oxides. 

II.The most important gas which leads to acidification is sulphur dioxide. 

Which of the statements given above is/are correct?"

(a)Only I

(b)Only II

(c) Both I and II

(d) Neither I nor II

Show Answer

C

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Quiz 5- Chemistry-General Science: General Knowledge Question & Answers

41 Q) Which one of the following is the softest?

(a) Sodium

(b)Iron

(c) Aluminium

(d)Copper

Show Answer

A

42 Q) Ethanol mixed petrol is being sold invarious states wef January 1, 2003. The percentage of ethanol in petrol is

(a) 10%

(b) 7%

(c) 6%

(d) 5%

Show Answer

D

43 Q) A polymer which is used for making ropes and carpet fibres is

(a) polyacetylene

(b) polypropylene

(c) polyacrylonitrile

(d) PVC

Show Answer

B

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Quiz 4- Chemistry-General Science: General Knowledge Question & Answers

31 Q) Vermicompost is a/an

(a) inorganic fertilizer

(b) toxic substance

(c) organic bio fertilizer

(d) synthetic fertilizer

Show Answer

C

32 Q) Which one of the following is involved for desalination of sea water?

(a)Simple osmosis

(b)Reverse osmosis

(c)Use of sodium aluminium silicate as zeolite

(d)Use of ion selective electrode

Show Answer

B

33 Q) "Soaps are important cleansing agent and this property is due to their emulsifying action. How does soap enhance the cleansing action? "

(a)It has a strong acidic character which can dissolve the dirt

(b)It rises the temperature of the reaction

(c)It breaks triple bond formed between dirt and cloth

(d)It has capacity to render more prolonged the mixing of oil and water

Show Answer

D

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Quiz 3- Chemistry-General Science: General Knowledge Question & Answers

21 Q) What type of reaction is carried out by the lipase in the digestion of fats?

(a) Reduction

(b)Dehydration

(c)Hydrolysis

(d)Calcification

Show Answer

C

22 Q) "Assertion (A) Lithium is used in the light weight electrical batteries of the type found in clocks and watches. Reason (R) The mass of Li required to release 1 mole of electron is so small. "

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

Show Answer

A

23 Q) Which one of the following compounds is frequently found packed with drying tubes?

(a)Calcium sulphate

(b)Magnesium chloride

(c)Calcium chloride

(d)Sodium thiosulphate

Show Answer

C

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Quiz 21- Physics -General Science: General Knowledge Question & Answers

201 Q) "Assertion (A) A table cloth can be pulled from a table without dislodging the dishes. 

Reason (R) To every action there is always equal and opposite reaction."

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

Show Answer

B

202 Q) Which one of the following forces lead to separation of the cream from the churned milk?.

(a)Gravitational force

(b)Cohesive force

(c)Centripetal force

(d)Centrifugal force

Show Answer

D

203 Q) In general what is the range of frequency of the "Message Signal"? .

(a)Radio frequency

(b) Audio frequency

(c) Both 'a' and 'b'

(d) Neither 'a' nor 'b'

Show Answer

A

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Quiz 20- Physics -General Science: General Knowledge Question & Answers

191 Q) Nearly 30% of the solar radiations return back to the space without contributing anything to the earth' s surface temperature. This amount of radiation is known as 

(a) black body

(b) tropopause

(cj earth's albedo

(d) mesopause

Show Answer

C

192 Q) "Assertion (A) Small liquid drops always assume spherical shape. 

 Reason (R) Liquid tends to have the minimum surface area due to surface tension."

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

Show Answer

A

193 Q) "Consider the following statements 

I.Transverse waves occur when a disturbance creates oscillations perpendicular to the propagation. 

II.Longitudinal waves occur when the oscillations are parallel to the direction of propagation. 

Which of the following statements given above is/are correct? "

(a)Only I

(b) Only II

(c) Both I and II

(d) Neither I nor II

Show Answer

C

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Quiz 19- Physics -General Science: General Knowledge Question & Answers

181 Q) "Assertion (A) Stress is the internal force per unit area of a body. 

Reason (R) Rubber are more elastic than steel. "

(a)Both A and R are true and R is the correct explanation of A

(b)Both A and R are true but R is not the correct explanation of A

(c)A is true but R is false

(d)A is false but R is true

Show Answer

B

182 Q) "Which of the following wavelengths will suffer maximum deviation while passing through a prism? "

(a)Orange

(b) Red

(c) Green

(d) Violet

Show Answer

D

183 Q) In an satellite a space traveller tries to fill ink in a pen by dipping it in ink. The amount of the ink filled in the pen as compared to the quantity of ink filled on the earth's surface will be

(a) same

(b)less

(c) more

(d)None of these

Show Answer

B

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Quiz 18- Physics -General Science: General Knowledge Question & Answers

171 Q) A current I flows through a potential difference V in an electrical circuit containing a resistance R. The product of V and I i.e., VI may be understood as

(a)Resistance R

(b)Heat generated by the circuit

(c)Thermal power radiated by the circuit

(d)Rate of change of resistance

Show Answer

C

172 Q) The cat survive fall from a height much more than human or any other animal. It is because the cat

(a)Has elastic bones

(b)Has thick and elastic skin

(c)Can immediately adjust itself to land on all four paws and absorbs the impact of fall by bending

(d)None of the above

Show Answer

C

173 Q) When we speak into a microphone, what type of vibrations the diaphragm executes?

(a) Free

(b) Forced

(c) Resonant

(d) None of these

Show Answer

B

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Quiz 17- Physics -General Science: General Knowledge Question & Answers

161 Q) "Consider the following statements with reference to total internal reflection

 I.Shinning of diamond. 

II.Formation of mirage. 

Which of the statements given above is/are correct?. "

(a) Only I

(b) Only II

(c) Both I and II II

(d) Neither I nor

Show Answer

C

162 Q) "A radar beam is sent onto a moving aeroplane in opposite direction of its approach. In which of these way it will be affected?. "

(a) Its wavelength decreases

(b) Its wavelength increases

(c) It remains unaffected

(d) None of the above

Show Answer

A

163 Q) If the spinning speed of the earth is increased then the weight of body at the equator

(a)increases

(b) decreases

(c) doubles

(d) does not change

Show Answer

B

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Quiz 16- Physics -General Science: General Knowledge Question & Answers

151 Q) "In the electric supply lines in India, which parameter is kept constant? (CDS 2007) "

(a)Current
(b) Voltage
(c) Power
(d) Frequency

Show Answer

D

152 Q) "Stars are twinkling due to "

(a) diffraction
(b) refraction
(c) scattering
(d) reflection

Show Answer

B

153 Q) "Assertion (A): The ammeter is always connected in series whereas a voltmeter is connected in parallel. 
Reason (R): An ammeter is a low-resistance galvanometer while a voltmeter is high resistant galvanometer."

(a)Both A and R are true and R is the correct explanation of A
(b)Both A and R are true but R is not the correct explanation of A
(c)A is true but R is false
(d)A is false but R is true

Show Answer

A

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