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Free download PDF of General knowledge(gk) multiple choice questions(mcqs) and answers on Chemistry. These general awareness quiz objective questions answers include mcqs on stranger gas, yellow cake etc.
(61)
‘Yellow cake’, an item of smuggling across border is
[A]
A crude form of cocaine
[B]
A crude form of heroin
[C]
Uranium oxide
[D]
Unrefined gold
Comment
(62)
Which one of the following is not an essential micronutrient for plants ?
[A]
Zinc
[B]
Copper
[C]
Boron
[D]
Sodium
Comment
(63)
Which one of the following polymers is widely used for making bullet proof material ?
[A]
Polycarbonates
[B]
Polyethylene
[C]
Polyamides
[D]
Polyvinyl chloride
Comment
(64)
The characteristic odour of garlic is due to
[A]
a chloro compound
[B]
a sulphur compound
[C]
a fluorine compound
[D]
acetic acid
Comment
(65)
Which of the following substances are found in the beach sands of many parts of Kerala ?
I. Ilmenite
II. Zirecon
III. Sillimanite
IV. Tungsten
Select correct answer using the codes given below:
[A]
I, II, III and IV
[B]
I, II and III only
[C]
III and IV only
[D]
I and II
Comment
(66)
With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct ?
I. Fly ash can be used in the production of bricks for building construction.
II. Fly ash can be used as a replacement for some of the Portland cement concrete.
III. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements.
Select the correct answer using the code given below.
[A]
I and II
[B]
II only
[C]
I and III
[D]
III only
Comment
(67)
With reference to ionic compounds, consider the following statement:
I. Ionic compounds are insoluble in alcohol
II. Ionic compounds in the solid state are good conductor of electricity
Which of these statements is/are correct ?
[A]
I only
[B]
II only
[C]
Both I and II
[D]
Neither I nor II
Comment
(68)
Which one of the following is also called Stranger Gas ?
[A]
Argon
[B]
Neon
[C]
Xenon
[D]
Nitrous oxide
Comment
(69)
Which of the following is/are the example /examples of chemical change ?
I. Crystallization of sodium chloride
II. Melting of ice
III. Souring of milk
Select the correct answer using the code given below.
[A]
I and II only
[B]
III only
[C]
I, II and III
[D]
None
Comment
(70)
Cobalt-60 is commonly used in radiation therapy because it emits
[A]
gamma rays
[B]
alpha rays
[C]
beta rays
[D]
X-rays
Comment
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