Question # 1

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

The movement of solvent molecules through a semipermeable membrane is called

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Electrolysis

Electrophoresis

Osmosis

Cataphoresis

Which of the following fluorides of xenon is impossible?

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XeF₂

XeF₃

XeF₄

XeF₆

Natural fertilizer provides potassium in the form of K₂O (potash)

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1.5 kg

3 kg

4.5 kg

6.5 kg

Sulphonation of benzoic acid produces mainly

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o-Sulphobenzoic acid

m-Sulphobenzoic acid

p-Sulphobenzoic acid

o- and p-Sulphobenzoic acid

Calcium acetate when dry distilled gives

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Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

The dimension of rate constant of second order reaction involves

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Neither time nor concentration

Only time

Time and concentration

Time and square of concentration

Most common reactions of benzene and its derivatives are

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Electrophilic addition reactions

Electrophilic subsitution reactions

Nucleoophilic addition reactions

Nucleophilic substitution reactions

Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

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Their metallic character decreases

The stability of +2 oxidation state increases

Their ionization energy increases

Their atomic size decreases

Leblanc process is employed in the manufacture of

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Baking soda

Washing soda

Potash

Plaster of paris

Addition of iron fillings to CuSO₄solution caused precipitation of Cu owing to the

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Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

The number of atoms in 0.004 g of magnesium is close to

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24

2 x 10²⁰

10²⁰

6.02 x 10²³

Which of the following is acidic?

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SO₃

N₂O

BeO

HgO

Among the alkaline earth metals the element forming predominantly covalent compounds is

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Be

Mg

Sr

Calcium

A current of 9.65 ampere flowing ofr 10 minutes deposits 3.0 g of the metal which is monovalent. The atomic mass of the metal is

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10

50

30

96.5

Chief air pollutant which is likely to deplete ozone layer

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Suphure dioxide

Carbon dioxide

Nitrogen oxides and chloro flrorocarbons

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