NEET Chemistry: Questions 233 - 239 of 677

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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, NaOH+H3PO4NaH2PO4+H2O ?

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.

Ge>Sn>Si>C

b.

Sn>Ge>Si>C

c.

C>Si>GeSn

d.

Si>C>Sn>Ge

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

Question number: 237

» P-Block Elements Group 13 to 18 » Group 14 » Allotropes of Carbon

MCQ▾

Question

H2SO4 is not used for the preparation of CO2 from marble chips because?

Choices

Choice (4) Response
a.

The reaction is vigorous

b.

Huge amount of heat is evolved

c.

It does not react

d.

Calcium sulphate is sparingly soluble and gets deposited on the marble chips

Question number: 238

» P-Block Elements Group 13 to 18 » Group 14 » Allotropes of Carbon

MCQ▾

Question

When a mixture of air and steam is passed over red hot cokes, the outgoing gas contains?

Choices

Choice (4) Response
a.

Water gas

b.

Mixture of A and B

c.

Producer gas

d.

Coal gas

Question number: 239

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

MCQ▾

Question

When excess of NaOH solution is added in potash alum, the product is?

Choices

Choice (4) Response
a.

a greenish precipitate

b.

a white precipitate

c.

clear solution

d.

a bluish precipitate

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