Question # 1

Which of the following represents peptide linkage

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-C=N-

-CO-NH-

-CH₂-NH-

-CH-NH-

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

The most abundant protein in the human body is

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Collagen

Keratin

Myosin

Albumin

If a graph is plotted between temperature on x-axis and volume on Y-axis for 1 mole of gas,then we get straight line which cuts the temperature axis at

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-300°C

300 K

-273.15 K

273.15°C

Instantaneous dipole-induced dipole forces are also known as:

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dipole-dipole interactions

hydrogen bonds

covlent bonds

Van der Waals forces

According to kinetic theory of gases there are

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Intermolecular attractions

Molecules which have considerable volume

No intermolecular forces of attraction

The velocity of molecules decreases for each collision.

About 25% of earth crust mass is made up of element

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Oxygen

Silicon

Aluminium

Aluminates

The value of Kc for H2O at 25C° is

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1x10 (-14)mole dm-3

14 mol dm-3

1.86×10(-16) mol dm-3

1.0x10 (-7)moldm-3

Plaster of Paris is obtained from

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marble

bauxite

gypsum

limestone

Choose a point which is not included in the components of environment:

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stratosphere

hydrosphere

lithosphere

biosphere

The proteins which give an amino acid and non-protein group on hydrolysis are known as

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Derived protein

Albumins

Conjugated simple protein

Conjugated protein

Metal tend to lose electrons, becoming:

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Metals

Positively charged

Negatively charged

(a)And (c)

Allyl chloride on dehydrochlorination gives

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Propadiene

Propylene

Allyl alcohol

Acetone

The entropy of the universe

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Constant

Is equal to zero

Decreasing

Increasing

The alkaline earth elements have in their s-orbital

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One electron

Two electron

No electron

Three electron

The essential component of organic compound is

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O

C

P

N

When fused PbBr₂is electrolyed then

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Bromine appears at cathode

Lead deposited at the cathode

Lead appears at the anode

None of these happens

Which one of the following substance is use as decolonizing agent

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Asbestos

Animal charcoal

conc, H₂SO₄

Silica gel

Alkanes are soluble in all except

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Benzene

Ether

Water

Carbon tetra chloride

Monosaccharides belong to the group

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Lipids

Fats

Proteins

Carbohydrates

The isomers due to the unequal distribution of carbon atoms on either side of the functional group belonging to the same homologous series are called

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Functional isomers

Position isomers

Chain isomers

Metamers

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32 g

3.2 g

5.6 g

9.6 g

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