Related Questions
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4
In the gas equation PV = xT, x is a constant. The value of the constant depends upon
C. type values of T and P
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4
The vapour density of gas A is four times that of gas B. If the molecular weight of gas B is M, then the molecular weight of gas A is
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4
Of the following properties, the magnitude of one must always increase with temperature. The property is
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4
Which of the following statement wrong?
A. In solid state molecules, atoms or ions are held with a strong force of attraction and are in a fixed position
B. In liquid state the molecules, atom or ions are held with a strong force and have a restricted motion
C. In gaseous states, the molecules are randomly arranged and are apart from each other
D. Solid, liquid and gaseous states have different movement is particles
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4
The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is
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4
One gram molecule of a gas at N.T.P occupies 22.4 litres. This fact was derived from
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Molecular formula of D in the above case is
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Which of the following phrases would be incorrect to use?
C. A molecule of a compound
D. A molecule of an element
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In a close packed arrangement of N spheres, the number of octahedral holes are
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4
The pressure of the ideal gas is less than the real gas because of the
A. increase in the number of collisions
B. volume occupied by the molecules
C. inter-molecular attraction
D. finite size of molecules
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4
The number of atoms per unit cell in bcc arrangement is
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4
In anti-fluorite structure the negative ions
A. occupy tetrahedral voids
B. occupy octahedral voids
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4
Kinetic gas equation is, PV =...
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4
The vapour density of pure ozone would be
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4
Which of the following is an amorphous solid?
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4
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
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4
In a closed packed structure the pattern ABAB...... represents which one of the following:
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Which of the following is an example of covalent network solid?
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4
22.4 litres of at 27.3°C and 1 atmosphere pressure shall weigh
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4
According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain
A. Equal number of electrons
D. Equal number of molecules
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4
Certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half its original value, the pressure becomes I twice that the initial value of constant temperature. This happens because
A. More number of a gas molecules strike the surface per second
B. Velocity of the gas molecules increases
C. Gas molecules attract each other
D. Weight of the gas increase with volume
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4
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
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4
At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?
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4
Arrange the following in order of increasing inter-molecular forces and boiling points:,He,
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4
In fluorite structure coordination number of calcium ions is
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4
In a dose packed arrangement of N spheres, the number of tetrahedral holes are
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4
The number of molecules in 4.25 gm of ammonia are approximately
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4
The vol. of 20 gms of nitrogen at N.T.P.
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Correct gas equation is
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Which compound possesses greatest lattice energy?