question_answer 1)
Which of the following is not a synthetic fibre:
A)
Angora done
clear
B)
Rayon done
clear
C)
Nylon done
clear
D)
Polyester done
clear
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question_answer 2)
Which one of the following is not contained in Portland cement? [NDA]
A)
\[C{{a}_{3}}A{{l}_{3}}{{O}_{6}}\] done
clear
B)
\[C{{a}_{3}}Si{{O}_{5}}\] done
clear
C)
\[C{{a}_{2}}Si{{O}_{4}}\] done
clear
D)
\[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\] done
clear
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question_answer 3)
Which one of the following acids is used for etching glass? [NDA]
A)
\[{{H}_{2}}S{{O}_{4}}\] done
clear
B)
\[HN{{O}_{3}}\] done
clear
C)
\[HF\] done
clear
D)
\[HCl\] done
clear
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question_answer 4)
What is the reason for white cement to be white? [NDA]
A)
It does not contain carbon done
clear
B)
It does not contain silicon done
clear
C)
It does not contain iron done
clear
D)
It does not contain calcium done
clear
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question_answer 5)
What is the purpose of adding plasticizers in paint manufacturing process? [NDA]
A)
They act as a film-forming constituent done
clear
B)
They reduce the viscosity done
clear
C)
They prevent the polymerization and condensation done
clear
D)
They provide elasticity to the film and minimize its cracking done
clear
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question_answer 6)
Which fertilizer is assimilated directly by the plant? [NDA]
A)
Super phosphate done
clear
B)
Nitrolim done
clear
C)
Muriate of Potash done
clear
D)
Humus done
clear
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question_answer 7)
Which raw material is used in the preparation of soft glass? [NDA]
A)
\[{{K}_{2}}C{{O}_{3}},Si{{o}_{2}},CaC{{O}_{3}}\] done
clear
B)
\[{{K}_{2}}C{{O}_{3}},Si{{O}_{2}},PbC{{O}_{3}}\] done
clear
C)
\[N{{a}_{2}}C{{O}_{3}},Si{{O}_{2}},CaC{{O}_{3}}\] done
clear
D)
\[N{{a}_{2}}C{{O}_{3}},Si{{O}_{2}},PbO\] done
clear
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question_answer 8)
Which of the following chemicals is used in foam fire extinguishers? [NDA]
A)
Aluminium sulphate done
clear
B)
Copper sulphate done
clear
C)
Cobalt sulphate done
clear
D)
Nickel sulphate done
clear
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question_answer 9)
What is the composition of nitrolim - a chemical fertilizer? [NDA]
A)
Nitrogen and limestone done
clear
B)
Calcium carbide and nitrogen done
clear
C)
Calcium carbide and carbon done
clear
D)
None of the above done
clear
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question_answer 10)
What is a mixture of potassium nitrate, powdered charcoal and sulphur called? [NDA]
A)
Glass done
clear
B)
Cement done
clear
C)
Paint done
clear
D)
Gun power done
clear
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question_answer 11)
Flint glass is obtained from which of the following? [NDA]
A)
Zinc and barium borosilicate done
clear
B)
Sand, red lead and potassium carbonate done
clear
C)
Sodium aluminium borosilicate? done
clear
D)
Pure silica and zinc oxide done
clear
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question_answer 12)
Which one of the following correctly defines the state of glass? [NDA]
A)
Crystalline solid done
clear
B)
Super cooled liquid done
clear
C)
Condensed &as done
clear
D)
Liquid crystal done
clear
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question_answer 13)
Which one of the following chemicals is used in beauty parlours for hair-setting? [NDA]
A)
Sulphur based done
clear
B)
Phosphorus based done
clear
C)
Silicon based done
clear
D)
Iron based done
clear
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question_answer 14)
The major component used in preparation of different types of glasses is [NDA]
A)
Silica done
clear
B)
Sodium borate done
clear
C)
Calcium silicate done
clear
D)
Sodium silicate done
clear
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question_answer 15)
Which one of the following substances is used in the manufacture of safety matches? [CDS]
A)
Red phosphorus done
clear
B)
White phosphorus done
clear
C)
Phosphorus trioxide (P203) done
clear
D)
Black phosphorus done
clear
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question_answer 16)
Which one of the following is used as a mordant in dyeing and tanning industry? [CDS]
A)
Magnesium oxide done
clear
B)
Magnesium carbonate done
clear
C)
Magnesium chloride done
clear
D)
Magnesium sulphate done
clear
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question_answer 17)
Which one of the following polymeric materials is used for making bullet proof jacket? [CDS]
A)
Nylon-6, 6 done
clear
B)
Rayon done
clear
C)
Kevlar done
clear
D)
Dacron done
clear
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question_answer 18)
The polymeric fibre used as a substitute for wool in making synthetic blankets, sweaters, etc., is [CDS]
A)
nylon done
clear
B)
Teflon done
clear
C)
orlon done
clear
D)
Bakelite done
clear
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question_answer 19)
The chemical used as a 'fixer' in photography is [LAS Prelim]
A)
Sodium sulphate done
clear
B)
Sodium thiosulphate done
clear
C)
Ammonium per sulphate done
clear
D)
Borax done
clear
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question_answer 20)
Statement I: Coal-based thermal power stations contribute to acid-rain. Statement II: Oxides of carbon are emitted when coal bums. [IAS Prelim]
A)
Both Statement I and Statement II are individually true and Statement II is the correct explanation of Statement I done
clear
B)
Both Statement I and Statement II are individually true but Statement II is not the correct explanation of Statement I done
clear
C)
Statement I is true but Statement II is false done
clear
D)
Statement I is false but Statement II is true done
clear
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question_answer 21)
Salts of which of the following elements provide colours to fireworks? [IAS Prelim]
A)
Zinc and sulphur done
clear
B)
Potassium and mercury done
clear
C)
Strontium and barium done
clear
D)
Chromium and nickel done
clear
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question_answer 22)
Statement I: Phenyl is used as a household germicide. Statement II: Phenyl is phenol derivative and phenol is an effective germicide. [IAS Prelim]
A)
Both Statement I and Statement II are true and Statement II is the correct explanation of Statement I done
clear
B)
Both Statement I and Statement II are true but Statement II is NOT the correct explanation of Statement I done
clear
C)
Statement I is true but Statement II is false done
clear
D)
Statement I is false but Statement II is true done
clear
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question_answer 23)
Consider the following chemicals: [IAS Prelim]
1. Benzene 2. Carbon tetrachloride 3. Sodium carbonate 4. Trichloroethylene
Which of the above/is are used as dry cleaning chemical?
A)
1 only done
clear
B)
2 only done
clear
C)
1, 2 and 4 only done
clear
D)
1, 2, 3 and 4 done
clear
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question_answer 24)
Which one of the following is another name of RDX? [IAS Prelim]
A)
Cyanohydrin done
clear
B)
Dextran done
clear
C)
Cyclohexane done
clear
D)
Cyclonite done
clear
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question_answer 25)
Which one of the following is used as an explosive? [IAS Prelim]
A)
Phosphorus trichloride done
clear
B)
Mercuric oxide done
clear
C)
Graphite done
clear
D)
Nitro-glycerine done
clear
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question_answer 26)
It is said, the Taj Mahal may be destroyed due to
A)
flood in Yamuna river done
clear
B)
decomposition of marble as a result of high temperature done
clear
C)
air pollutants released from oil refinery of Mathura done
clear
D)
all the above done
clear
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question_answer 27)
\[C{{O}_{2}}\] absorbs some of the ............. that radiates from the surface of Earth to space -
A)
ozone done
clear
B)
heat done
clear
C)
ultraviolet light done
clear
D)
smog done
clear
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question_answer 28)
Which of the following is a measure of organic pollution of water -
A)
DO done
clear
B)
BOD done
clear
C)
COD done
clear
D)
All of these done
clear
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question_answer 29)
Which of the following gas causes pollution -
A)
CO done
clear
B)
\[S{{O}_{2}}\] done
clear
C)
Both [a] and [b] done
clear
D)
None of the above done
clear
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question_answer 30)
DDT is a -
A)
non-biodegradable pollutant done
clear
B)
biodegradable pollutant done
clear
C)
antibiotics done
clear
D)
none of the above done
clear
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question_answer 31)
Ozone layer in upper atmosphere (stratosphere) is destroyed by -
A)
hydrochloric acid done
clear
B)
photochemical smog done
clear
C)
chlorofluoro carbon (CFC) done
clear
D)
sulphur dioxide done
clear
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question_answer 32)
Chipko movement is concerned with -
A)
plant conservation done
clear
B)
project tiger done
clear
C)
plant breeding done
clear
D)
animal breeding done
clear
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question_answer 33)
The layer which reflects radio signals back to earth is -
A)
Ozone layer done
clear
B)
Troposphere done
clear
C)
Ionosphere done
clear
D)
Stratosphere done
clear
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question_answer 34)
Which of the following is the major cause of global warming?
A)
Re-radiation of U.V. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O\] done
clear
B)
Re-radiation of I.R. rays by \[C{{O}_{2}}\] and \[{{H}_{2}}O\] done
clear
C)
Re-radiation of I.R. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\] done
clear
D)
Re-radiation of U.V. rays by \[{{O}_{2}}\] and \[{{N}_{2}}\] done
clear
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question_answer 35)
A green house
A)
is an enclosure of glass in which plants are kept to protect them from cold air outside done
clear
B)
is that "body" which allows the short wavelength incoming solar radiation to enter in, but does not allow long wavelength outgoing infra-red radiations to escape out done
clear
C)
both the above done
clear
D)
none of the above done
clear
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question_answer 36)
Minimata disease is a pollution-related disease, which results from -
A)
release of human organic waste into drinking water done
clear
B)
release of industrial waste mercury into fishing water done
clear
C)
accumulation of arsenic into atmosphere done
clear
D)
oil spills into sea done
clear
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question_answer 37)
Which of the following best describes "jet streams"?
A)
Wind system with seas and reversal of direction. done
clear
B)
Wind blowing from sub-tropical high pressure belts towards the tropical low pressure belts. done
clear
C)
Narrow meandering bands of winds which blow in mid latitude near the tropopause and encircle the globe. done
clear
D)
Winds blowing from the tropical high pressure belts towards the equatorial low pressure belts. done
clear
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question_answer 38)
Which one of the following is associated with the formation of brown air in traffic congested cities? [CDS]
A)
Sulphur dioxide done
clear
B)
Nitrogen oxide done
clear
C)
Carbon dioxide done
clear
D)
Carbon monoxide done
clear
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question_answer 39)
Some statements about the benefits of organic farming are given below. Indicate whether they are true or false using the codes given below the statements : [CDS]
1. It reduces \[C{{O}_{2}}\] emission. 2. It does not lead to toxic effect. 3. It improves the water-retention capacity of the soil.
Codes
A)
\[_{False}^{\,\,\,\,\,\,1}\] \[_{True}^{\,\,\,\,\,\,2}\] \[_{False}^{\,\,\,\,\,\,3}\] done
clear
B)
\[_{True}^{\,\,\,\,\,\,1}\] \[_{False}^{\,\,\,\,\,\,2}\] \[_{False}^{\,\,\,\,\,\,3}\] done
clear
C)
\[_{False}^{\,\,\,\,\,\,1}\] \[_{True}^{\,\,\,\,\,\,2}\] \[_{True}^{\,\,\,\,\,\,3}\] done
clear
D)
\[_{False}^{\,\,\,\,\,\,1}\] \[_{True}^{\,\,\,\,\,\,2}\] \[_{True}^{\,\,\,\,\,\,3}\] done
clear
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question_answer 40)
From which one among the following water sources, the water is likely to be contaminated with fluoride? [CDS]
A)
Ground water done
clear
B)
River water done
clear
C)
Pond water done
clear
D)
Rainwater done
clear
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