Chemistry - Questions and Answers, General Study (GK)

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Chemistry - Questions and AnswersPage 19

181.

The internal resistance of a dry cell is

(a)Equal to that of electrolytic cell

(b)Smaller than that of electrolytic cell

(c)Higher than that of electrolytic cell

(d)Zero

Comment

Answer is: CNA

182.

To protect iron against corrosion, the durable metal plating on it, is

(a)Tin plating

(b)Copper plating

(c)Zinc plating

(d)Nickel plating

Comment

Answer is: CNA

183.

The source of electrical energy on the Appolo moon flight was

(a)A generator set

(b)Fuel cell

(c)Ni-Cd cell

(d)Lead storage batteries

Comment

Answer is: BNA

184.

When a lead storage battery is discharged

(a)SO₂ is evolved

(b)Lead is formed

(c)Lead sulphate is formed

(d)Sulphuric acid is formed

Comment

Answer is: CNA

185.

Anode mud is a

(a)Mixture of impure metal like Fe

(b)SO₂ gas

(c)Mixture of Ag, Au, Pt

(d)None of the above

Comment

Answer is: CNA

186.

Corrosion is basically an

(a)Interaction

(b)Union between two light metals and a heavy metal

(c)Altered reaction in presence of H₂O

(d)Electrochemical phenomenon

Comment

Answer is: CNA

187.

Galvanized iron sheets are protected from rusting due to presence of a layer of

(a)Lead

(b)Chromium

(c)Zinc

(d)Tin

Comment

Answer is: CNA

188.

The long form of periodic table consist of

(a)8 horizontal and 7 vertical series

(b)7 horizontal and 18 vertical series

(d)8 horizontal and 8 vertical series

Comment

Answer is: BNA

189.

Transition metals are often paramagnetic owing to

(a)High mp and bp

(b)The presence of vacant orbitals

(c)The presence of unpaired electrons

(d)Malleability and ductility

Comment

Answer is: CNA

190.

In a period, the elements are arranged in the order of

(a)Constant charges in the nucleus

(b)Equal charges in the nucleus

(c)Decreasing charges in the nucleus

(d)Increasing charges in the nucleus

Comment

Answer is: DNA

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Chemistry - Questions and AnswersPage 19

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