NEET Chemistry: Questions 127 - 133 of 1110

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Question number: 127

» S-Block Elements Group 1 and 2 » Preparation and Properties » Sodium Hydroxide

MCQ▾

Question

What will the product when dry ammonia is passed over sodium at 400 0 C in absence of air?

Choices

Choice (4) Response

a.

NaH+NH3

b.

NaOH+NH3

c.

NaNH2

d.

NaH

Question number: 128

» S-Block Elements Group 1 and 2 » Industrial Uses » Limestone

MCQ▾

Question

Mortar is mixture of?

Choices

Choice (4) Response

a.

CaCO3 and SiO2

b.

CaO and silica

c.

CaCO3 , SiO2 water

d.

Ca(OH)2 , silica, water

Question number: 129

» S-Block Elements Group 1 and 2 » Electronic Configuration

MCQ▾

Question

Which of the following alkali metals are used in photoelectric cell?

Choices

Choice (4) Response

a.

Cs and Na

b.

Cs and Rb

c.

K and Cs

d.

Na and Li

Question number: 130

» S-Block Elements Group 1 and 2 » General Introduction

MCQ▾

Question

Which of the following alkali metals are most abundant in nature?

Choices

Choice (4) Response

a.

K and Na

b.

Li and Na

c.

Li and K

d.

Cs and Li

Question number: 131

» S-Block Elements Group 1 and 2 » General Introduction

MCQ▾

Question

Which one of the following ore is a mineral for magnesium?

Choices

Choice (4) Response

a.

Dolomite

b.

Iceland spar

c.

Carnotite

d.

Barytes

Question number: 132

» S-Block Elements Group 1 and 2 » Preparation and Properties » Sodium Hydroxide

MCQ▾

Question

Which of the following is true about sodium?

Choices

Choice (4) Response

a.

NaOH solution does not react with chlorine.

b.

Manganous hydroxide is soluble in excess of NaOH solution.

c.

NaOH is primary standard in volumetric analysis

d.

NaOH is used in concentration of bauxite ore

Question number: 133

» S-Block Elements Group 1 and 2 » Trends in Physical and Chemical Properties

MCQ▾

Question

What will be the change in hybrid state of BeCl 2 in the solid state?

Choices

Choice (4) Response

a.

sp3

b.

sp

c.

sp2

d.

dsp2

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