Question # 1

Why is carbon monoxide called as pollutant? The reason is that

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It combines with oxygen

It combines with haemoglobin

It inactivates glycolysis

It inactivates nerves

Alkali metals react viotlently with halogens:

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Halides

Anhydrides

Hydrides

None of the above

Chloroform is carcinogenic:

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Heart

Lungs

Liver

Kidney

The molecular mass of a polymer is obtained by multiplying mass of the monomer unit the degree of polymerization. The degree of polymerization of PVC is 1000. What is molecular mass

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65000

63000

62000

60000

Which one of the following elements is not an alkali metal?

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Na

Sr

Cs

Rb

Which gas produces air pollution?

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oxides of sulphur

oxides of carbon

all of these

The volume of gas depends upon the------- moleules

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Size of

Space between

Molecular weight

both a and b

which one of the following exhibits intermolecular hydrogen bonding?

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HF

HC

HBr

HI

Group of element belongs to IIB group

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Zn. Cd. Hg

Cu. Ag. Au

Sc. Y. La

Ni. Pd. Pt

The highest temperature at which gas can be liquefied and above which liquefaction is impossible is called

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Boiling temperature

Upper consulate temperature

Transition temperature

Critical temperature

Increased concentration of enzyme alkaline phosphatase is a sign of

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hemophilia

heart disease

thrombosis

rickets

Electrolytes in the form of solution or in the fused state have the ability to conduct :

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Light.

Electricity.

Ions.

Electrons.

Oxidation of ter-alcohol gives:

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Aldehyde

Formaldehyde

Ketone

Alkens

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

Strong oxidizing agents have

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Greater positive value of standard reduction potential

Lesser positive value of standard

Greater negative value of standard

None of these

On passing ethane into concentrated suphuric acid the intermediate compound formed on hydrolysis with boiling water gives

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Methyl alcohol

Ethyl alcohol

Ethyl hydrogen sulphate

Methyl hydrogen sulphate

The amount of heat evolved or absorbed in a chemical reaction, when the molar quantities of products and reactants being the same as represented in chemical equation. is called

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Heat of reaction

Free energy of reaction

Entropy of reaction

None of these

The number of moles of CO2which contain 8.0 g of oxygen

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0.25

0.50

1.0

1.50

Acetylene is used in the manufacture of

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Rubber

Plastic

Ethyle alcohol

All of these

Which one of the following does not belong to alkaline earth metals

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Be

Ra

Ba

Rn

Phosphide ion has the electronic structure similar to that of

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Nitride ion

Fluoride ion

Sodium ion

Chloride ion

95% ethanol is called :

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Rectified ether.

Diesel.

Rectified spirit.

Petrol.

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