Question # 1

Oxidation reduction is done by

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Oxidoreductase

Lipases

Lyase

None of these

Which of the following protein is used to make buttons

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Gelatin

Callogen

Albumin

Casein

Which one of the following is the most abundant organic substance found in nature?

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fructose

starch

glucose

cellulose

The origin ofacidic nature of alkyne is?

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small size of C

Small size of H

polarity of triple bond

sp hybridization

The high molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

How many allotropic forms are present in carbon?

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Two

Four

Three

Five

Which is not an enzyme

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Transverses

Lipase

Lyase

None of these

Albumin, globin and casein are

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Milk proteins

Plasma proteins

Egg proteins

Meat proteins

Gases show uniform behavior towards their:

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Internal conditions.

External conditions.

Internal and external conditions.

None of above.

H₂O is liquid at room temperature whereas H₂S is a gas because

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H₂O used as drinking water, but H₂S has rotten egg smell

H₂O is neutral. H₂S is a weak acid

stronger hydrogen bonding in H₂O than in H₂S

H₂O occurs abundantly than H₂S

Alpha helix and beta pleated sheath are secondary structures of protein which are maintained by

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dipole forces

non-polar interactions

ionic bonds

Hydrogen bonds

The bond angles in methane CH₄are equal to

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109.5°

107.5°

104.5°

120°

Which compound is more soluble in water

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C₂H₅OH

C₆H₅OH

CH₃OCH₃

n-hexanol

SN₂reactions can be best carried out with:

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Prl. alkyl halide

Sec. Alkyl halide

Ter. Alkyl halide

All of three

Chemical reactivity of elements depends upon their characteristic:

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Shape.

Color.

Electronic configuration.

Sizes

Soil remediation means

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To make it suitable for cultivation of crops

To make it acidic

To make it alkeline

To add manure into it

Cellulose does:

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Satisfy human appetite

Stimulates intestinal peristalsis

Gives fibre and bulk to the food

All of these

Main cause of reducing map is:

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Combustion of coal

NO and NO₂

Un-Burnt Hydrocarbons

All of these

Aqueous solution of glucose C₆H₁₂O₆, boils at 100.052°C. The solution contains

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180 grams glucose in 1 kg water

18 grams glucose in 1 kg water

1.8 grams glucose in 1 kg water

3.6 grams glucose in 1 kg

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Total pressure

Amount of A₂and B₂

Temperature

Catalyst

One of the following bonds is polar but compound is non-polar

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H₂O

NH₃

HCl

CO₂

Among the following elements which one has the highest value of first ionization potential?

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Oxygen

Argon

Barium

Cesium

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