Question # 1

Sponification is the hydrolysis of fats or oil with an:

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alkali

base

enzyme

metallic ion

One gram of Carbohydrate yield energy:

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4Kcal

9Kcal

10Kcal

100Kcal

Suspended matter is settled in purification of water by:

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aeration

coagulation

chlorination

treatment

A real gas most closely approaches the behaviour of an ideal gas at

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15 atm. and 200 K

1 atm. and 273 K

0.5 atm.and 500 K

15 tm, and 500 K

The buffering property of proteins is due to the presence of

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Acidic and basic group

Hydrogen bonds

Indole group

Hyrophobic

Nucleic acid contain elements like N,H,O,C and

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Ca

S

P

F

In which of these processes are small organic molecules changed into macromolecules?

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the fractional distillation of crude oil

the cracking of petroleum fractions

the hydrolysis of proteins

the polymerization

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Compton effect

Stark effect

Zeeman effect

Photoelectric effect

Vegetables oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glycerides of saturated fatty acids

Essential oils obtained from plants

2,4,6-Trinitrophenol is commonly called as

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Phthalic acid

Tartaric acid

Malonic acid

Picric acid

In which molecule. all atoms are coplanar?

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CH4

BF3

NH3

PH3

When carbon dioxide is passed through the R - Mg - X is produced

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Any carboxylic acid

Propanoic acid

Propanedioic acid

None of these

The method in which alkanes prepared by alkyle halides in the presence of palladium - charcoal is

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Hydrolysis

Electrolysis

Hydrogenation

Hydrogenolysis

Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is

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1

2

3

4

Which salt is used for preserving food

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BaCl₂

CaCl₂

NaCl

Na₂SO₄

Chromyl chloride and toluene react to produce

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p-chlorotoluene

Benzaldehyde

Benzyl chloride

Bezoic acid

If we remove one hydrogen atom from an alkane we obtain a group called

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Acetyle group

Formyle group

Alkyle group

Ketyle group

BOD is

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Biological oxygen deficit

Biosphere oxygen demand

Biological oxygen demand

None of the above

Rosenmund's reduction of an acyl chloride gives

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An aldehydes

An alcohol

An ester

A hydrocarbon

Group VIB of transition elements contains

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Zn, Cd, Hg

Fe, Ru, Os

Cr, Mo, W

Mn, Te, Re

The oxidation number of chromium in K₂Cr₂O₇is

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14

12

6

None of these

Which of the following is not isoelectronic?

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Na⁺

Mg²⁺

O^2-

Cl^-

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