Question # 1

What is the co-ordination number of face centered cubic structure?

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12

8

6

10

Boyle's law does not fall even:

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Temperature is extremely high.

Pressure is extremely high.

Mixture of gases is taken.

All of above.

which one of the following statements bout negative ions is incorrect?

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they are also know as anions

they are formed when atoms gain electrons

they are large than the atom from which they were formed

they are smaller than the atom from which they were formed

Fine powder gypsum is mixed with clinker up to:

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4%

6%

5%

7%

Which of the following is an example of aldohexose?

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Ribose

Sucrose

Fructose

Glucose

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T₁= T₂= T₃

T₁< T₂< T₃

T₁> T₂> T₃

T₁> T₂= T₃

The suspended particles in the raw water can be removed by the

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Coagulation

Aeration

Hydration

Dehydration

In s solution 7.8 g of benzene ( C6H6 ) and 46g of toluene (C6H5CH3) is present. The mole fraction of toluene is

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1/3

1/5

2/3

5/6

In MgCl2, the oxidation state ofCI is

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Zero

-2

+2

-1

Chose a point which is not included in the components of environment

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Stratosphere

Hydrosphere

Lithosphere

Biosphere

The molecules of air don't settle down. This is due to:

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non-polar nature of gases

different molar mass

elastic collisions of gas molecules

pressure of dust particles in air

Which one of the following statements of glucose and sucrose is incorrect?

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Both are soluble in water

Both are naturally occuring

Both are carbohydrates

Both are disaccharides

Electrolysis is used for :

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Manufacture of caustic soda

Refining of copper

Electroplating

All of above

The toxic organic compounds and heavy metals and metalloids results in contamination of

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Surface water

Ground water

Both surface and ground water

Neither surface nor ground waters

Which of the following order is incorrect w.r.t property indicated?

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Formic acid > Acetic acid > Propionic acid (ACID STRENGTH)

Cyclohexanol < Phenol < Benzoic acid ( ACID STRENGTH)

Benzamide < Aniline < Cyclohexylamine ( ACID STRENGTH)

FCH₂COOH > CICH₂COOH > BrCH₂COOH (ACID STRENGTH)

For which system does the equilibrium constant. K_chas units of

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Borax is hydrated:

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Penta

Deca

Hepta

Octa

The atom other than C in a hetrocyclic compound is called as

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Hetroatom

Hetroion

Hetromolecule

Hetroelement

Metallic conduction is due to the

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Movement of electrons

Movement of ions

Both a and b

None of these

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

Peat before conversion to bituminous coal is converted to

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Lignite

Anthracite

Asphalt

None

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled then the equilibrium constant will

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Also be doubled

Be halved

Becomes one fourth

Remains the same

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