Question # 1

The fibre which is obtained from naturally occuring protein is called

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saran

azlon

rayon

nylon

A gas has non-ideal behaviour at:

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high temperature and high pressure

low temperature and low pressure

high temperature and low pressure

low temperature and low pressure

One of the following can produce greater number of moles of ethyl chloride on reacting with escess of ethanol

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PCI5

PCI3

HCI/ZnCl2

SOCI2

The proteins which are derived by conjugated proteins are called as

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Simple protein

Complex protein

Derived protein

None

Which of the following successive ionization energies belong to a Group ll element?

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320,600,1110,1700,5650,

577,1820,2740,1160,14800,

428,3070,4600,5860,7990

736,1451,7740,10500,13600

Which of the following is not a secondary pollutant

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Ozone

Carbonic acid

Sulphuric acid

Carbon dioxide

Whenever a reaction is endothermic, then it means that

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Heat is transferred system to the surrounding

Heat is transferred from surrounding to the system

Heat content of the products is less than that of reactants

Heat content of the reactants is greater than the products

Storage form of iron

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Transferrin

Ferritin

Myosin

Actin

Which of the following is a thermosetting plastic?

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PVC

polyethylene

polystyrene

melamines

Fungicides re the pesticides which:

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kill plants

kill herbs

kill insects

control the growth of fungus

Polar ice caps can melt due to

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Acid rain

Green House Effect

Smog

Chlorofluorocarbons

The relative atomic mass of chlorine is 35.5. What is the mass of 2 mol of chlorine gas

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142 g

71 g

35.5 g

18.75 g

Which one of the following enzymes brings about the hydrolysis of fats

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Urease

Maltase

Zymase

Lypase

The order of reactivity for a given halogen in Grignard's reagent is:

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CH₃X > C₂H₅X > C₃H₄X > C₄H₄X

C₂H₅X > C₃H₇X > C₄H₅X > CH₄X

C₃H₇X > C₄H₇X > CH₃X > C₂H₅X

C₄H₄X > C₃H₇X > C₂H₅X > CH₄X

Formic Acid is obtained from Red out by:

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Distillation

Crystallization

Filtration

sublimation

Splitting of spectral lines when atoms are subjected to strong electric field is called:

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Zeeman effect.

Stark effect

Photoelectric effect.

Compton effect.

Water which his considered to be safe for human consumption is known as

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Distilled water

Contaminated water

Potable water

Rain water

The correct arrangement of increasing order of atomic radius among Na, K, Mg, Rb is

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Mg < K < Na < Rb

Mg < Na < K < Rb

Mg < Na < Rb < K

Na < K < Rb < Mg

A fat or oil is characterised for extent of unsaturation by one of the following number, which one

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Rancidity number

Acid number

Iodine number

Saponicfication number

The substance having highest conductivity at room temperature among the following is

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0.1 N HCl

0.1 N NaCl

Graphite

Glass

The rate of reaction determined at a given time is called

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Average rate

Instantaneous rate

Specific rate

Overall rate

The final product formed by distilling ethyl alcohol with excess of Cl₂and Ca(OH)₂is

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CH₃CHO

CCl₃CHO

CHCl₃

(CH₃)₂O

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