Question # 1

How many kinds of space lattices are possible in a crystal?

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23

7

230

14

Ascorbic acid is a chemical name of

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Vitamin D

Vitamin A

Vitamin C

Vitamin B₆

Which of the following compounds has the lowest anion to cation size ratio?

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LiF

NaF

CsI

CsF

In a crystal a ≠ b ≠ c, a = γ = 90° and β ≠ 90°, it is

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Monoclinic

Rhombic

Trigonal

Tetragonal

Which of the substances Na, Hg, S Pt and graphic can be used as electrodes in electrolytic cells having aqueous solution?

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Na,Pt and graphite

Na and Hg

Pt and graphite only

Na and S only

The reference calomel electrode is made from which of the following?

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ZnCI₂

CuSO₄

Hg₂CI₂

HgCI₂

The formula of calcium cyanamide is

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Ca(CN)₂

CaC₂N

CaNCN

CaCHNH₂

Which of the following species participate in sulphonation of benzene ring?

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H₂SO₄

HSO^-₃

SO₃

SO^-₂

Covalent compounds are soluble in

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Polar solvents

Non-polar solvents

Concentrated acids

All solvents

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