P-Block Elements Group 13 to 18 (NEET Chemistry): Questions 27 - 31 of 100

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Question number: 27

» P-Block Elements Group 13 to 18 » Groupwise Study of the P - Block Elements

MCQ▾

Question

Ionization enthalpy for the elements of group 13 follows the order?

Choices

Choice (4) Response
a.

B<Al<Ga<In<Ti

b.

B>AlGa>In<Ti

c.

B<Al>Ga<In>Ti

d.

B>Al>Ga>In>Ti

Question number: 28

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

MCQ▾

Question

Boron cannot form which one of the following anions?

Choices

Choice (4) Response
a.

[B(OH)4]

b.

BH4

c.

BF6

d.

BO2

Question number: 29

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

MCQ▾

Question

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

Choices

Choice (4) Response
a.

One mole of Na2HPO3

b.

One mole of Na3PO3

c.

Two moles of Na2HPO3

d.

Two moles of Na2H2PO3

Question number: 30

» 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: 31

» 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

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