P-Block Elements Group 13 to 18-Group 13 (NEET Chemistry): Questions 7 - 14 of 20

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Question number: 7

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

MCQ▾

Question

Boron has an unusually high melting point due to?

Choices

Choice (4) Response
a.

Inert pair effect

b.

Very strong crystalline lattice

c.

Smaller size than beryllium

d.

Allotropy

Question number: 8

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

MCQ▾

Question

Sesquioxide can be obtained by heating?

Choices

Choice (4) Response
a.

Orthoboric acid

b.

Borax

c.

Metaboric acid

d.

Boronitride

Question number: 9

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

MCQ▾

Question

Reactivity of borazole is higher than that of benzene because?

Choices

Choice (4) Response
a.

Borazole is electron deficient compound

b.

Boazole is non polar compound

c.

Of localized electrons in it

d.

Borazole is a polar compound

Question number: 10

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

MCQ▾

Question

The bonds present in borazole are?

Choices

Choice (4) Response
a.

9σ, 9π

b.

12σ, 3π

c.

9σ, 6π

d.

6σ, 6π

Question number: 11

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

MCQ▾

Question

Which one of the following minerals of borax is also known as Tincal or Suhaga?

Choices

Choice (4) Response
a.

Magnesium

b.

Borax

c.

Colemanite

d.

Boric acid

Question number: 12

» 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: 13

» 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: 14

» 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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