NEET Chemistry: Questions 254 - 257 of 677

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Question number: 254

» Basic Concepts in Chemistry » Molar Mass

MCQ▾

Question

Choose the correct statements

(1) If W1 gm of the element X combines with w2 gm of Cl then the equiv. wt. of X=W1W2×35.5

(2) If metallic zinc or iron be added to a solution of silver nitrate or copper sulphate, finely wt.ofZn/WtofFewtofAg

Divided silver or copper is precipitated then

Equiv.wt.ofZn/equ.WtofFeEquiv.wtofAg

(3) If W1 gm. of the element ‘X’ combines with w2 gm. of Cl then the equiv. wt. of X = w2w1×35.5

(4) If metallic zinc or iron be added to a solution of silver nitrate or copper sulphate, finely

wtofAgwt.ofZn/WtofFe

Divided silver or copper is precipitated then Equiv.wt.ofZn/equ.WtofFeEquiv.wtofAg

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response
a.

1 and 3 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

Question number: 255

» P-Block Elements Group 13 to 18 » Group 18 » Noble Gases

MCQ▾

Question

The gas with lowest boiling point is?

Choices

Choice (4) Response
a.

Neon

b.

Argon

c.

Helium

d.

Radon

Question number: 256

» P-Block Elements Group 13 to 18 » Group 16 » Introduction

MCQ▾

Question

Which of the following elements of group 16 has largest atomic radii?

Choices

Choice (4) Response
a.

Polonium

b.

Sulphur

c.

Oxygen

d.

Selenium

Question number: 257

» P-Block Elements Group 13 to 18 » Group 17 » Interhalogen Compounds

MCQ▾

Question

Inter halogen compounds are more reactive than the individual halogen because?

Choices

Choice (4) Response
a.

They carry more energy

b.

They are more ionic

c.

Two halogen s are present in place of one

d.

Their bond energy is less than the bond energy of the halogen molecule

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