Question # 1

Out of twenty how many amino acids can by synthesized by human body?

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Five

Ten

Seven

Twelve

Eggs oils and fats contain vitamin .

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A

B

C

D

Which one of the followoing is the Hardest coal.

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Peat

Lignite

Bituminous

Anthracite

Sodium zeolite is naturally occurring reason of .

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NaAl (SiO₃)₂

Na₂CO₃

CaCO₃

Na₂SIO₃

The ability of carbon atoms to form chains is called.

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Isomerism

Catenation

Resonance

Condensation

Which is the substitution reaction in the following?

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Halogenation of alkenes

Halogenation of alkynes

Bromination of alkene

Halogenation of alkanes

Which one of the following is not a greenhouse Effect?

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Increasing atmosphere temperature.

Increasing food chains

increasing flood risks

Increasing sea-level

The bond angle between H-O-H in water is:

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104.5^o

104.6^o

104.7^o

104.8^o

Some orchids attracts bees for pollination by producing.

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alkanes

almenes

alkynes

all the above.

The molecular formula of the first three members of the alkane hydrocarbons are CH_4,C₂H₆ and C₃H₈. What is the molecular formula for the eight alkane member, octane, which is found is petrol?

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C₈H₈

C₈H₁₆

C₈H₁₈

C₈H₂₀

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

Glucose and fructose are.

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Pentose

Triose

Hexoses

None of these

Which is used for cleaning agent for domestic and commercial purpose?

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NaCl

Na₂CO₃

NaHCO₃

Na₂SiO₃

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