NEET Chemistry: Questions 198 - 204 of 1145

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Question number: 198

» D and F Block Elements » Inner Transition Elements » Lanthanides

MCQ▾

Question

What is the lanthanide oxide used for making coloured goggles?

Choices

Choice (4) Response

a.

Cerium oxide

b.

Samarium oxide

c.

Lanthanum oxide

d.

Neodymium oxide

Question number: 199

» D and F Block Elements » Transition Elements » Trends in Properties

MCQ▾

Question

The 3d metal ions are generally paramagnetic in nature because?

Choices

Choice (4) Response

a.

they are reducing agents

b.

they form coloured salts

c.

they have one or more paired s electrons

d.

they have one or more unpaired d electrons

Question number: 200

» D and F Block Elements » Transition Elements » Trends in Properties

MCQ▾

Question

Silver halides are used in photography because these compounds are?

Choices

Choice (4) Response

a.

affected by light

b.

soluble in ammonia solution

c.

easily sticks on the surface of photographic plate

d.

insoluble in water

Question number: 201

» D and F Block Elements » Inner Transition Elements » Lanthanides

MCQ▾

Question

The reason for the stability of Gd +3 ions is?

Choices

Choice (4) Response

a.

half-filled 4 f shell

b.

possesses the electronic configuration of inert gases

c.

empty 4 f shell

d.

completely filled 4 f sub shell

Question number: 202

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

MCQ▾

Question

Which of the following compound is formed in borax bead test?

Choices

Choice (4) Response

a.

Orthoborate

b.

Double oxide

c.

Tetarborate

d.

Metaborate

Question number: 203

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

MCQ▾

Question

Which one of the following is nonmetal in group III elements?

Choices

Choice (4) Response

a.

Al

b.

Ga

c.

In

d.

B

Question number: 204

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

MCQ▾

Question

Aluminium chloride exists as a dimer, Equation , in solid state as well as in solution of non polar solvents such as benzene. When dissolved in water, it gives?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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