Question # 1

Two moles of an ideal gas at 1 atm are compressed to 2 atm at 273 K.The enthalpy change for the process is

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2 litre atm

1 litre atm

Zero

3 litre atm

Which is the following would have most like an ideal gas at room temperature?

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carbon dioxide

helium

hydrogen

nitrogen

Which of the following is not a property of crystalline solid

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geometric shape

cleavage plane

anisotropy

isomerism

Carboxylic acids reacts with sodium carbonate, & gas evolved in this reaction

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CO2

H2

CO

Both a &b

α and β Glucose differs in orientation of hydroxyl group around

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C₁

C₂

C₃

C₄

The ratio of volume to temperature on Kelvin scale is constant according to:

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Charle's law

Newton's law

Coulomb's law

Boyle's law

The smallest unit of a crystal that shows all the characteristic properties of its pattern is called

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cell

electrolyte

unit cell

crystal

Which is not considered as pollutant

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O₃

CO₂

NO₂

SO₂

The force which hold the atoms together to form a compound is called:

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Dispersion forces

London forces

A chemical bond

Ven der wall's forces

Which one of the following statements about melting point of metals is true?

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sodium has a lower melting point than potassium

sodium has a higher melting point than magnesium

potassium has a higher melting point rubidium

lithium has a lower melting point than sodium

An ideal gas expands according to PV=constant. On expansion, the temperature of gas

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will rise

will drop

cannot be determined because the exteral pressure is not known

will remain same

Which of the following elements is not present in all proteins?

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Carbon

Hydrogen

Nitrogen

Sulphur

The temp. and pressure used for PVC polymerization is

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10°C and 10 atm

20°C and 20 atm

52°C and 9 atm

100°C and 10 atm

Which of the following compounds will not give iodoform test on treatment with I₂/ NaOH?

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Acetaldehyde

Acetone

Butane

3-pentanone

Which compound is both chiral and acidic

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In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is

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3

2

5

Zero

In lead accumulator the electrolyte is H₂SO₄solution is

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30% H₂SO₄

60% H₂SO₄

80% H₂SO₄

90% H₂SO₄

Maximum hydrogen bonds in water are

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4

3

2

8

HCOOH reacts with conc. H₂SO₄to produce

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CO

CO₂

NO

NO₂

The reaction of aromatic acyl chloride and phenol in the presence of a base NaOH or pyridine is called

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Kolbe's reaction

Perkin's reaction

Sandmeyer's reaction

Schotten Baumann reaction

The rigid rocket part of earth crust called lithosphere extends upto a depth of:

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10 km

100 km

1000 km

1500 km

A catalyst is a substance which increase the rate of a chemical reaction, but remains unchanged at the end of reaction, nut remains unchanged at the end of reaction, because

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It increases the temperature

It increase the surface area

It increases the rate constant

It decrease the energy energy of activation

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