NEET (National Eligibility cum Medical Entrance Test) Chemistry: Questions 217 - 223 of 1145

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Question number: 217

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

MCQ▾

Question

Although the ionization potential of boron is less than gold, yet former is non-metal while the latter is a metal?

Choices

Choice (4) Response

a.

Because boron has 6 atoms as neighbours

b.

Because gold has 12 neighbour atoms

c.

Due to the structural difference

d.

All a. , b. and c. are correct

Question number: 218

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

MCQ▾

Question

A dry ice piece is composed of?

Choices

Choice (4) Response

a.

Solid SO2

b.

Solid He

c.

Solid CO2

d.

Solid C6H6

Question number: 219

» 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: 220

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

MCQ▾

Question

Which of the following is acidic in nature?

Choices

Choice (4) Response

a.

Al (OH) 2

b.

Equation

c.

Equation

d.

B Equation

Question number: 221

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

MCQ▾

Question

Which of the following is not correct regarding graphite?

Choices

Choice (4) Response

a.

It is an amorphous allotrope of carbon

b.

Used for making lubricants

c.

A good conductor of heat

d.

Softer than diamond

Question number: 222

» 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: 223

» 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

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