Question # 1

Which of the following has least mass?

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2 gram atom of nitrogen

3 x 10²³ atoms of C

1 mole of S

7.0 g of Ag.

Potassium crystallizes with a

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Orthogonal lattice

Cubic lattice

Triclinic

Ortho rhombic lattice

The disaccharide present in milk is

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Sucrose

Maltose

Lactose

Cellobiose

Galena is an ore of

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Gallium

Lead

Tin

Germanium

Which of the following has greatest tendency to lose electron?

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F

Fr

S

Be

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Gooch crucible used to filter the solution of

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H₂SO₄

HCI

KMnO₄

Both B & C

Hydrogen chloride molecule contains

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Covalent bond

Double bond

Co-ordinate bond

Electrovalent bond

Setting of plaster of paris involves

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Oxidation with atmospheric oxygen

Combination with atmosphere CO₂

Dehydration

Hydration to yield another hydrate.

Which of the following fluorides of xenon in impossible?

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XeF₂

XeF₃

XeF₄

XeF₆

The equilibrium constant in a reversible chemical reaction at a given temperature

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Depends on the initial concentration of the reactants

Depends on the concentration of one of the products at equilibrium

Does not depend on the initial concentrations of recatants

Is not characteristic of the reaction

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