NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 229 - 235 of 1258

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Question number: 229

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

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MCQ▾

Question

Boron cannot form which one of the following anions?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 230

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

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MCQ▾

Question

One mole of H3PO3 on reaction with excess of NaOH gives?

Choices

Choice (4) Response

a.

One mole of

b.

One mole of

c.

Two moles of

d.

Two moles of

Question number: 231

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

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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.

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

b.

(X) is more basic than ammonia

c.

(A) on heating gives (X) and O2

d.

(A) is dibasic acid

Question number: 232

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

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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 is paramagnetic

c.

It cannot react with red hot copper

d.

It produces tears in eyes

Question number: 233

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

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MCQ▾

Question

The liquefied metal expanding on solidification is?

Choices

Choice (4) Response

a.

Zn

b.

Ga

c.

Al

d.

Cu

Question number: 234

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

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MCQ▾

Question

The equivalent mass of phosphoric acid in the reaction, ?

Choices

Choice (4) Response

a.

98

b.

49

c.

59

d.

25

Question number: 235

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

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MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

d.