NEET Chemistry: Questions 213 - 219 of 677

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Question number: 213

» 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: 214

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

MCQ▾

Question

The state of hybridization of the central atom and the number of lone pairs over the central atom in POCl3 are?

Choices

Choice (4) Response
a.

dSP2,0

b.

SP3,0

c.

SP,0

d.

SP2,0

Question number: 215

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

MCQ▾

Question

Lime water is formed milky on passing CO2 with the formation of?

Choices

Choice (4) Response
a.

CaCO3

b.

Ca(OH)2

c.

Ca(HCO3)2

d. Question does not provide sufficient data or is vague

Question number: 216

» P-Block Elements Group 13 to 18 » Group 14 » Zeolites

MCQ▾

Question

When hard water is passed through a column packed with zeolite, calcium and magnesium ions exchange with?

Choices

Choice (4) Response
a.

Barium

b.

Aluminium

c.

Zinc

d.

Sodium

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

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