Question # 1

Which of the following does not contribute towards the formation of photochemical smog?

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NO

SO₂

O₃

Hydrocarbons

How many secondary carbon atoms are present in Methylcylopropand

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1

2

3

0

What is the mass of 10²⁰molecules of CO₂at STP?

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7.3 x 10^-3g

7.9 x 10^-3g

3.2 x 10^-3g

4.9 x 10^-3g

A graph is plotted, P on x-axis and V on y-axis for a given mass at constant temperature, we shall get:

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a curve with different peaks

a curve called isotherm

straight line parallel to x-axis

a straight line

The reason of acid rain is:

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release of CO in excess by in complete combustion

excess release of NO₂ and SO₂ from burning of fossil fuels

Formation of NH₃ in excess form industry and coal gas

Formation of excess CO₂ due to combustion and respiration

Formation of PVC form vinyl chloride is an example of

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substitution reaction

addition polymerization

condensational reaction

Aldol condensation

Monosaccharides adn oligosacchardies are generally called as

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Crystal

Sugars

liquids

Non-sugars

Which of following is NOT use the polyvinylacetate (PVA)

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An adhesive material

Binder for emulsion

Used as gramophone

None as these

The substances added in paints for improving the mechanical properties is called:

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pigmein

filter

stabilizer

binder

During incineration temperature range of non-rotating chamber is

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900-1000C°

650-1100C°

950-1300C°

700-900C°

The energy produced by a carbohydrate is:

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3 kcal/gm

2kcal/gm

6kcal/gm

4kcal/gm

Similarity in properties of different organic compounds give rise to the under standing of ______

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Polymerization

Non-polar nature

Homologous series

Isomerism

Prevention of corrosion of iron by Zn coating is called

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Galvanization

Cathodic protection

Electrolysis

Photoelectrolysis

The number of electron pairs shared in carbon tetrachloride molecule is

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2

3

4

1

The self linking property of carbon is called as

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Linking polymerization

Addition

Catenation

Elimination

Plaster of pares is obtained by heating

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Gypsum

Epsom

Lime stone

Dolomite

The sum of the exponents of the conc. terms in the rate equation is called

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Rate of reaction

Order of reaction

Specific rate constant

Average rate

The number of groups in the periodic table is

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6

7

8

9

Which gasoline is better?

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Of low boiling point

Of low molecular mass

Of high octane

All of these

Which is the derived lipid?

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Common fats

Vitamin-D

Common oils

Spinolipids

Alkanes have functional group :

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----X

--OH

----COH

No functional group

Chromic acid used to oxidize

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Aldehyde

Ketone

Both a and b

None of these

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