Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

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Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

A. 29 gm/mole

B. 66.7 gm/mole

C. 12.67 gm/mole

D. 25.22 gm/mole

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In the ideal gas equation PV = nRT constant 'R' has the unit

A. joule

B. litre/mol

C. lit-atm/deg/mol

D. calorie/mole

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Indicate the most viscous liquid of the following

A. propanol-2

B. 1.2, ethandiol

C. 1.2,3 propentriol

D. ethanol

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The vapour density of ozone would be

A. 72

B. 8

C. 48

D. 24

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The coordination number of each sphere in hcp arrangement is

A. 12

B. 8

C. 6

D. 4

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The ratio of RMS velocity to average velocity of a gas molecule at a particular temperature is

A. 1.086:1

B. 1:1.086

C. 2 :1.086

D. 1.086 : 2

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Indicate the most volatile liquid of the following:

A. $C H_{3} O H$

B. $C H_{3} O C H_{3}$

C. $H_{2} O$

D. $C H_{3} C H_{2} O C H_{2} C H_{3}$

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In which one of the following does diffusion occur most rapidly?

A. Solid

B. Liquid

C. Gases

D. Gels

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The molecular weight of a volatile liquid can be determined by

A. Dumas' method

B. Victor Meyer's method

C. Cryoscopic method

D. Osmotic pressure

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A balloon filled with ethane is pricked up with sharp point and quickly plunged into a tank of hydrogen at the same pressure. After some time balloon will

A. be enlarged

B. be collapse

C. remain unchanged in size

D. have half its volume of the gas

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Four 1 litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same temperature and pressure, the ratio of total number of atoms of these gases present in the different flasks would be

A. 3:2:2:1

B. 2:1:2:3

C. 1:2:2:3

D. 1:1:1:1

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Vapour density of a gas is 35.5. The volume occupied by 3.55 gm of the gas at NTPis

A. 1.12 litres

B. 2.24 litres

C. 22.4 litres

D. 11.2 litres

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20 litres of hydrogen gas weighs about

A. 1.8 g

B. 3.6 g

C. 224 g

D. 12.2 g

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The Van der Waal's equation explains the behaviour of

A. ideal gases

B. real gases

C. vapours

D. non-real gases

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In a closed packed structure the pattern ABAB...... represents which one of the following:

A. ccp

B. hcp

C. fccp

D. bcc

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The electrical conductivity of metals is of the order of

A. $10^{12} o h m^{- 1} c m^{- 1}$

B. $10^{8} o h m^{- 1} c m^{- 1}$

C. $10^{2} o h m^{- 1} c m^{- 1}$

D. $10^{- 6} o h m^{- 1} c m^{- 1}$

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The ionic radii of $M g^{+ 2}$ and $O^{- 2}$ are 0.66 $\overset{°}{A}$ and 1.40 $\overset{°}{A}$ , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is

A. NaCl type

B. CsCl type

C. ZnS type

D. Boron oxide type

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How many nearest neighbours are there in an octahedral hole of a close packed structure

A. 4

B. 6

C. 8

D. 12

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The weight of 11.2 litres of $C O_{2}$ at S.T.P. would be

A. 22 gms

B. 66 gms

C. 11 gms

D. 16 gms

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Which of the following is an amorphous solid?

A. NaCl

B. $C a F_{2}$

C. Diamond

D. Glass

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Sodium chloride has fee structure. How many $N a^{+}$ and $C l^{-}$ ions are there in the unit cell?.

A. 6 and 6

B. 4 and 4

C. 1 and 1

D. 6 and 4

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Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is

A. 1/2

B. 1/3

C. 1/9

D. 8/9

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Three dimensional array of points in space is called

A. unit cell

B. crystal lattice

C. micro-crystal

D. None of these

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In a close packed arrangement of N spheres, the number of octahedral holes are

A. N

B. 2N

C. 4N

D. 8N

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For a given gas at temperature T and pressure P the root mean square velocity (RMS) is C; then at temperature T and pressure 3P the RMS is

A. Unchanged

B. 3C

C. C/3

D. $C^{3}$

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Lattice energy of a solid is high if

A. the radii of the ions are large

B. radii of the ions are small

C. charge on the ions are small

D. the ions are neutral

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The vol. of 20 gm. of hydrogen at N.T.P. is

A. 22.4 litres

B. 112 litres

C. 12 litres

D. 224 litres

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In the wurtzite structure sulphur atoms have

A. cubic arrangement

B. hexagonal dose packed arrangement

C. body centred arrangement

D. None of these

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The molecular velocity of any gas is

A. proportional to absolute temperature

B. proportional to the square root of absolute temperature

C. independent of temperature

D. proportional to die square of absolute temperature

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From the Dulong and Petit's law atomic weight is given by which one of the following relations?

A. 6.41 sp. heat

B. 6.4/sp. heat

C. sp. heat/6.4

D. sp. heat/6.4 x 2

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In a face centred cubic arrangement of ions, the coordination number of ions is

A. 6

B. 8

C. 12

D. 4

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Accepted Answer

B. 66.7 gm/mole

Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

Correct Answer :

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Related Questions

In the ideal gas equation PV = nRT constant 'R' has the unit

Indicate the most viscous liquid of the following

The vapour density of ozone would be

The coordination number of each sphere in hcp arrangement is

The ratio of RMS velocity to average velocity of a gas molecule at a particular temperature is

Indicate the most volatile liquid of the following:

In which one of the following does diffusion occur most rapidly?

The molecular weight of a volatile liquid can be determined by

A balloon filled with ethane is pricked up with sharp point and quickly plunged into a tank of hydrogen at the same pressure. After some time balloon will

Four 1 litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same temperature and pressure, the ratio of total number of atoms of these gases present in the different flasks would be

Vapour density of a gas is 35.5. The volume occupied by 3.55 gm of the gas at NTPis

20 litres of hydrogen gas weighs about

The Van der Waal's equation explains the behaviour of

In a closed packed structure the pattern ABAB...... represents which one of the following:

The electrical conductivity of metals is of the order of

The ionic radii of $M g^{+ 2}$ and $O^{- 2}$ are 0.66 $\overset{°}{A}$ and 1.40 $\overset{°}{A}$ , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is

How many nearest neighbours are there in an octahedral hole of a close packed structure

The weight of 11.2 litres of $C O_{2}$ at S.T.P. would be

Which of the following is an amorphous solid?

Sodium chloride has fee structure. How many $N a^{+}$ and $C l^{-}$ ions are there in the unit cell?.

Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is

Three dimensional array of points in space is called

In a close packed arrangement of N spheres, the number of octahedral holes are

For a given gas at temperature T and pressure P the root mean square velocity (RMS) is C; then at temperature T and pressure 3P the RMS is

Lattice energy of a solid is high if

The vol. of 20 gm. of hydrogen at N.T.P. is

In the wurtzite structure sulphur atoms have

The molecular velocity of any gas is

From the Dulong and Petit's law atomic weight is given by which one of the following relations?

In a face centred cubic arrangement of ions, the coordination number of ions is

Also checkout

Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

Correct Answer :

Show all State of Matter MCQ

Related Questions

In the ideal gas equation PV = nRT constant 'R' has the unit

Indicate the most viscous liquid of the following

The vapour density of ozone would be

The coordination number of each sphere in hcp arrangement is

The ratio of RMS velocity to average velocity of a gas molecule at a particular temperature is

Indicate the most volatile liquid of the following:

In which one of the following does diffusion occur most rapidly?

The molecular weight of a volatile liquid can be determined by

A balloon filled with ethane is pricked up with sharp point and quickly plunged into a tank of hydrogen at the same pressure. After some time balloon will

Four 1 litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same temperature and pressure, the ratio of total number of atoms of these gases present in the different flasks would be

Vapour density of a gas is 35.5. The volume occupied by 3.55 gm of the gas at NTPis

20 litres of hydrogen gas weighs about

The Van der Waal's equation explains the behaviour of

In a closed packed structure the pattern ABAB...... represents which one of the following:

The electrical conductivity of metals is of the order of

The ionic radii of Mg+2 and O-2 are 0.66 A° and 1.40 A° , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is

How many nearest neighbours are there in an octahedral hole of a close packed structure

The weight of 11.2 litres of CO2 at S.T.P. would be

Which of the following is an amorphous solid?

Sodium chloride has fee structure. How many Na+ and Cl- ions are there in the unit cell?.

Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is

Three dimensional array of points in space is called

In a close packed arrangement of N spheres, the number of octahedral holes are

For a given gas at temperature T and pressure P the root mean square velocity (RMS) is C; then at temperature T and pressure 3P the RMS is

Lattice energy of a solid is high if

The vol. of 20 gm. of hydrogen at N.T.P. is

In the wurtzite structure sulphur atoms have

The molecular velocity of any gas is

From the Dulong and Petit's law atomic weight is given by which one of the following relations?

In a face centred cubic arrangement of ions, the coordination number of ions is

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The ionic radii of $M g^{+ 2}$ and $O^{- 2}$ are 0.66 $\overset{°}{A}$ and 1.40 $\overset{°}{A}$ , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is

The weight of 11.2 litres of $C O_{2}$ at S.T.P. would be

Sodium chloride has fee structure. How many $N a^{+}$ and $C l^{-}$ ions are there in the unit cell?.