Question # 1

Which of the following statements about amorphous solids is incorrect?

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They melt over a range of temperature

They are anisotropic

There is no orderly arrangement of particles

They are rigid and icompressible

Which of the following species is used to formation of glycerol fatty acid from triglyceride

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NaOH

Ni

Lipase

All

If the rate of the reaction is equal to the rate constant, the order of the reaction is

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3

1

0

2

One dm³of O₂at STP has mass

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32 g

16 g

4.438 g

1.4383 g

A polymeric substance that is formed in the liquid state and then hardened to a liquid solid us called as:

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Fibre

Plastic

Varnish

Polyamide resin

Choose the crop for which ammonium nitrate is not used:

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paddy rise

cotton

wheat

sugar cane

Lipids are naturally occurring compounds produced in cell and are water insoluble but soluble in organic solvent one of the following is not a lipid, Select among the following:

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nucleic acid

atriglceride

sterol

vitamin D

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T₁= T₂= T₃

T₁< T₂< T₃

T₁> T₂> T₃

T₁> T₂= T₃

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

In the atosphere, CO₂is about

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0.01%

0.03%

0.05%

0.09%

The alkaline hydrolysis of bromoethane shown below gives alcohol as the product: H3C-CH2-Br-------H3C-CH2-OH

The reagent and the condition used in this reaction may be:

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H20 at room temperature

KOH in alcohol

Ethanol. heat

Dilute NaOH(aq) warm

What are alloys

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A homogenous mixture of two or more elements

A homohenous mixture of metal and a non-metal

A homogenous mixture of two or more metals

None of the above

Among the alkaline earth metals the element forming predominantly covalent compounds is

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Be

Mg

Sr

calcium

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84.84 %

89.89%

81.81%

90.90%

Ionization is the process in which ionic compounds when fused or dissolved in water split up into charged particles called :

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Atoms.

Electrons.

Protons .

Ions

Gasoline is a mixture of hydrocarbons containing carbon atoms

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5 to 10

5 to 8

5 to 12

5 to 11

In incinerating the waste is burnt at

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1000°C

100°C

2000°C

1500°C

With the progressive of the reaction the slope of the curve between concentration of product and time

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Gradually becomes more steep

Gradually becomes less steep

No change occurs in slope

None of these occurs

Coal is obtained from dead remains of

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Plants

Animals

Both a and b

None

According to Raoult's law

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Relative lowering of V.P. is equal to mole fraction of solute

The lowering of V.P. is directly proportional to mole fraction of solute

V.P. of solvent above solution is equal to product of V.P. of pure solvent and mole fraction of solvent ins solution

All of the above

The treatment of benzene with isobutene in the presence of sulphuric acid give

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isobutyl benzene

tert-Butyl benzene

n- Butyl benzene

no reaction

Phosphide ion has the electronic structure similar to that of

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Nitride ion

Fluoride ion

Sodium ion

Chloride ion

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