NEET Chemistry: Questions 211 - 216 of 1145

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Question number: 211

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

MCQ▾

Question

Bauxite ore is generally contaminated with impurity of oxides of two elements E1and E2. Which of the following statements is correct?

Choices

Choice (4) Response

a.

E1 is a non-metal and belongs to 3rd period while E2 is a metal and belong to fourth period

b.

One of the two oxides has three dimensional polymeric structures

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 212

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

MCQ▾

Question

The general formula of cyclic or ring silicates is?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Both a. and c. are correct

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.

Equation

b.

Equation

c.

Equation

d.

Equation

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.

Equation

b.

Equation

c.

Equation

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

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