NEET Chemistry: Questions 231 - 236 of 1145

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Question number: 231

» P-Block Elements Group 13 to 18 » Group 15 » Phosphorus

MCQ▾

Question

White phosphorus on reaction with limewater gives calcium salt of an acid (A) along with a gas (X). Which of the following is correct?

Choices

Choice (4) Response

a.

(X) is more basic than ammonia

b.

(A) on heating gives (X) and O2

c.

The bond angle in (X) is less than that in case of ammonia

d.

(A) is dibasic acid

Question number: 232

» P-Block Elements Group 13 to 18 » Group 15 » Nitrogen

MCQ▾

Question

If O2 is removed from the formula of anhydride of HNO2, then the formula of the resulting compound satisfies which of the following properties?

Choices

Choice (4) Response

a.

It supports combustion

b.

It cannot react with red hot copper

c.

It produces tears in eyes

d.

It is paramagnetic

Question number: 233

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

MCQ▾

Question

The liquefied metal expanding on solidification is?

Choices

Choice (4) Response

a.

Cu

b.

Zn

c.

Al

d.

Ga

Question number: 234

» P-Block Elements Group 13 to 18 » Group 15 » Oxides and Oxoacids of Phosphorus

MCQ▾

Question

The equivalent mass of phosphoric acid in the reaction, Equation ?

Choices

Choice (4) Response

a.

98

b.

59

c.

25

d.

49

Question number: 235

» P-Block Elements Group 13 to 18 » Group 14 » Tendency for Catenation

MCQ▾

Question

The tendency of catenation in group 14 elements follows the order?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 236

» P-Block Elements Group 13 to 18 » Group 15 » Oxides and Oxoacids of Phosphorus

MCQ▾

Question

The oxyacid of phosphorus in which phosphorus has the lowest oxidation state is?

Choices

Choice (4) Response

a.

Pyro phosphoric acid

b.

Hypo phosphorus acid

c.

Meta phosphoric acid

d.

Ortho phosphoric acid

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