Biology/Biology MCQ Question - Gases Sample Test,Sample questions

Question:
A specie with maximum number of unpaired electrons.

1.F

2.H2O

3.HF

4.NH-2


Question:
An atom loses or gains electrons to

1.Gain stability

2.Form a bond

3.Complete its outermost shell

4.all are accurate justifications


Question:
Critical temperature for different gases is different and depends upon

1.Size of molecule

2.Shape of molecule

3.Intermolecular attractions

4.All of the above


Question:
Energy of atom in compound is

1.Higher than individual

2.Lesser than individual

3.No change

4.Impossible to predict


Question:
Energy required to remove electron from an atom

1.Ionization potential

2.Electronegativity

3.Electron affinity

4.Activation energy


Question:
For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature?

1.1/2dm3

2.1/3dm3

3.1/4dm3

4.2/3dm3


Question:
Force responsible to hold atoms together in a compound is called

1.Bond

2.Attractive force

3.Interaction

4.All of above represent same entity


Question:
Hydrogen effuses four times more rapidly than volume of an unknown gas molar mass of unknown gas should be

1.16 gmol-1

2.32 gmol-1

3.48 gmol-1

4.64 gmol-1


Question:
If 1/V is plotted on X-axis and pressure on Y-axis at constant temperature what should appear

1.Straight line parallel to x-axis

2.Straight line parallel to y-axis

3.Straight line

4.Curve


Question:
In a group ionic radii

1.Increases

2.Decreases

3.No change

4.Variable trend


Question:
In a period the atomic radii

1.Increases

2.Decreases

3.Remain same

4.First decreases then increases


Question:
In how many forms do matter exists?

1.Three

2.Four

3.Five

4.Two


Question:
In O2 each oxygen atom is hybridized

1.sp3

2.sp2

3.sp

4.All


Question:
Ionization energy in a period generally

1.Increases

2.Decreases

3.No change

4.Variable trend


Question:
Linds method is employed for

1.Separation of gases

2.Expansion of gases

3.Compression of gases

4.Liquefaction of gases


Question:
Measurement of the degree of polarity is

1.Electron affinity

2.Ionic character

3.Ionization energy

4.Dipole moment


Question:
Molecular orbitals are filled according to

1.Auf bau principle

2.Hunds rule

3.Paulis Exclusion principle

4.All these


Question:
One mole of an ideal gas at 546.5 K under 2 atm pressure has a volume of

1.22.414 m3

2.44.828 dm3

3.22.414 dm3

4.11.212 cm3


Question:
Shielding effect across the period

1.Increases

2.Decreases

3.Constant

4.None


Question:
The diffusion of gases at absolute zero will be

1.Unchanged

2.Slightly decreased

3.Slightly increased

4.Zero


Question:
The gases become non-ideal at

1.High temperature and high pressure

2.Low temperature and low pressure

3.High temperature and low pressure

4.Low temperature and high pressure


Question:
The highest temperature at which a substance can exist as a liquid is called its

1.Critical temperature

2.Standard temperature

3.Absolute temperature

4.Upper consulate temperature


Question:
The ionization energy

1.Generally increases from left to right in a period

2.Does not change in a period

3.Increase from top to bottom in a group

4.Does not change in a group


Question:
The kinetic molecular theory of gases was put forward in 1738 by

1.Boltzman

2.Maxell

3.Clausius

4.Bernoulli


Question:
The molecule having ?-bond

1.H2O

2.C2H6

3.O2

4.NH3


Question:
The non-ideal behaviour results chiefly from

1.Intermolecular attraction and infinite volume

2.Elastic collisions and finite volume

3.Intermolecular attractions and finite volume

4.Intermolecular attraction only


Question:
The octet rule does not always hold for which of the following elements

1.C

2.O

3.F

4.P


Question:
The partial pressure exerted by the water vapours is called

1.Surface tension

2.Aqueous tension

3.Vapour pressure

4.Hydraulic pressure


Question:
The processes of effusion and diffusion are best understand by

1.Daltons law

2.Avogadros law

3.Grahams law

4.Charles law


Question:
The relative attraction of the nucleus for the electrons in a chemical bond is called

1.Ionization energy

2.Electron affinity

3.Electro negativity

4.None of the above


Question:
The solid particles only posses

1.Translational motion

2.Vibrational motion

3.Rotational motion

4.All of above motions


Question:
The spreading of fragrance or scent in air is due to

1.Diffusion

2.Effusion

3.Attraction with air

4.Low dsensity


Question:
What do we call to sudden expansion of plasma?

1.Avogadros law

2.Grahams law of diffusion

3.Joule Thompson effect

4.Daltons law of partial pressure


Question:
What is the abundant form of matter on earth?

1.Gas

2.Liquid

3.Solid

4.Plasma


Question:
What is the simplest form of matter?

1.Gas

2.Liquid

3.Solid

4.Semi solid


Question:
What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume?

1.98.5 atm

2.96.7 atm

3.95.8 atm

4.97.1 atm


Question:
When 2 lone pair and 2 bond pair are around the central atom reduction in the bond angle is up to.

1.109.5?

2.104.5?

3.107.5?

4.102?


Question:
Which of the following have their outer most shell complete in atomic form?

1.Noble gases

2.Alkali metals

3.Coinage metals

4.Gun metals


Question:
Which of the following is the best explanation that CO2 is non polar molecule

1.Linear geometry

2.Dipole moment is zero

3.Sp hybridization

4.None


Question:
Which of the following option is incorrect about gases?

1.All molecules move with same speed

2.All molecules behave independently

3.PV / RT = n

4.All gases cannot be liquefied through Linds Method


Question:
Which of the following will have highest value of electron affinity

1.F

2.Cl

3.Br

4.I


Question:
Which of the solid does not contain covalent bond

1.Copper

2.Ice

3.Diamond

4.Graphite


Question:
Which one has maximum number of unpaired electrons?

1.6X

2.7Y

3.9Z

4.13W


Question:
Which one is not the absolute term of the element?

1.Ionization energy

2.Electron affinity

3.Electro negativity

4.Atomic size


Question:
Which one is not the partial pressure of oxygen in the lungs?

1.0.1526 atm

2.116 mm of Hg

3.116 torr

4.1 atm


Question:
Which one is the right value for R?

1.0.0821 atm dm3k-1mol-

2.0.0821 atm m3k-1mol-1

3.2 cal k-1 mol-1

4.8.314 Nm2k-1mol-1


Question:
Which one shows high %age of the ionic character?

1.H2O

2.HF

3.HCI

4.HBr


Question:
Which state of matter has the lowest density?

1.Gas

2.Liquid

3.Solid

4.Plasma


Question:
Which type of bond is formed by overlap of p orbitals

1.Pi (?)

2.Sigma(?)

3.Both

4.Neither


Question:
Who made volume and pressure correction to explain deviation of gases from ideal behaviour?

1.Clausius

2.Boltzman

3.Charles

4.Vander waal


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