Question # 1

Glucose is converted into ethanol by the enzyme present in the yeast

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Urease

Zymase

Invertase

Sucrase

According to Avogadros law 1 mole of gas at S.T.P has a volume of

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22.4 dm³

24 dm³

24000 cm³

2m³

If a = b = c and x = y = z 90° then crystal structure is

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Cubic

Tetragonal

Orthorhombic

Triclinic

Nitrogen in the atmosphere is:

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78%

21%

0.9%

0.03%

The concentration of product is increasing from 30 mole/dm3 to 40mol/dm3 in 0.5 sec then rate of reaction will be------moledm-3sec-1

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0

20

15

25

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

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Alicyclic compounds are the homocyclic compounds which contain a ring of

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5 or more carbon atoms

6 or more carbon atoms

3 or more carbon atoms

4 or more carbon atoms

The optimum PH value fro the enzyme pepsin is:

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10

1.4

2

8

The original volume of a gas at 0° is 273 cm³at constant pressure, its volume at 273°C becomes

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zero cm³

546 cm³

446 cm³

346 cm³

Rate of which reaction increases with temperature?

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Exothermic and endothermic reactions

Endothermic reactions

Exothermic reactions

None of these

Which woody raw material is used for manufacture of paper pulp?

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Cotton

Bagasse

Popular

Rice straw

(CH₂O)_nis general formula for

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Monosaccharides

Oiligosaccharides

Polysaccharides

None of these

The reaction of aromatic acyl chloride and phenol in the presence of a base NaOH or pyridine is called

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Kolbe's reaction

Perkin's reaction

Sandmeyer's reaction

Schotten Baumann reaction

Which one of the following substances is a synthetic polyester

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Cotton

Nylon

Rayon

Terylene

Bell metal is an alloy of Sn and

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Copper

Iron

Zinc

Magnesium

The compounds which have any atom other than Carbon atom, in rings are called as

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Monocyclic

Heterocyclic

Homocyclic

None of the above

Baking powder has which one of the following formula

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Na₂CO₃

Na₂SO₄

NaHCO₃

K₂CO₃

Ethanal may be converted into a three-carbon acid in a two-step process.

Which compound is the intermediate

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CH₃CO₂H

CH₃CN

CH₃CH₂CN

CH₃CH(OH)CN

95% alcohol is called

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Rectified spirit

Spirit of wine

Spirit

Methylated

Which of the following compound is obtained on passing ethanol vapours on heated Al₂O₃?

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Ethylether

Acetone

Ethane

Ethanol

Some of the elements of a period show similar behavior with the elements of next group in next period this is called

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Vertical relationship

Oblique relationship

Diagonal relationship

None

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