Question # 1

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

Which of the following protien is found in bone

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Keratin

Ossein

Mucin

Actin

The increase in reaction rate as a result of increase in temperature from 10K to 90K is

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512

256

400

112

It is a biodegradable pollutant

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Salts of HG

DDt

Aluminum foil

Domestic fuel

At ordinary temperature, the most nearly ideal gases are

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N₂

He

H₂

all these

Anthracene contains number of fused benzene rings

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1

2

3

4

Glucose is converted into ethanol by the enzyme present in the yeast

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Urease

Zymase

Invertase

Sucrase

Which one of following property is not true about alkali metals?

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Strongest bases due to their hydrides

Low ionization energy

Oxidation number more than +1

Form acidic oxides

When gaseous chemicals are transported y road or by rail they are classified as follows:
flammable non-flammable poisonous
which gas is poisonous:

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butane

non-flammable

hydrogen

sulphur dioxide

The volume of 2.8 g of carbon monoxide at 27°C and 0.821 atm pressure is (R = 0.0821 lit.atm.Mol^-1 K^-1)

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30 L

3 L

0.3 L

1.5 L

The temperature in the incineration of industrial and hazardons waster process had a range

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950 to 1300°C

500 to 900°C

250 to 500°C

900 to 1000°C

Which of the following will have the highest boiling point at 1 atm pressure?

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0.1 M NaCl

0.1 M Sucrose

0.1 M BaCl₂

0.1 M Glucose

The four quantum numbers of the valency electron of potassium are

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4,1,1,1/2

4,0,0,1/2

4,1,0,1/2

4,4,0,1/2

Raney - nickel is the alloy of Ni with

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Pt

Al

Cu

Pd

The reaction of an alkyl halide with RCOOAg produces

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Ester

Ether

Aldehyde

Ketone

In its reaction with Na, 1 mol of X gives 1 mol of H_2(g). What is X

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CH₃CH₂CH₂CH₂OH

(CH₃)₃COH

CH₃CH₂CH₂CO₂H

CH₃CH(OH)CO₂H

Hybridized in carbon is:

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sp

sp²

sp³

d²sp

Which one of the following has continuous solubility curve

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NH₄NO₃

CaCI

CaCI₂. 6H₂O

Na₂SO₄. 10H₂O

A system undergoes a change to attain the state of

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High energy

Low energy

Moderate energy

None of these

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-76 KJ

-57 KJ

-171 KJ

-114 KJ

e/m of cathode rays is same but for positive rays e/m changes by changing gas in the discharge tube because

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Cathode rays are small sized particles

Cathode rays have same charge

Nature of cathode rays same for all gasses, but masses of nuclei are different for different gases

Temperature of cathode rays higher

The chemical formula of Trona is

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KCl . MgCl₂. 6H₂O

Na₂CO₃. 2NaHCO₃. 2H₂O

Na₂CO₃. H₂O

KCl

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