A specie with maximum number of unpaired electrons.
1.F
2.H2O
3.HF
4.NH-2
An atom loses or gains electrons to
1.Gain stability
2.Form a bond
3.Complete its outermost shell
4.all are accurate justifications
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
Energy of atom in compound is
1.Higher than individual
2.Lesser than individual
3.No change
4.Impossible to predict
Energy required to remove electron from an atom
1.Ionization potential
2.Electronegativity
3.Electron affinity
4.Activation energy
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
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
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
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
In a group ionic radii
1.Increases
2.Decreases
3.No change
4.Variable trend
In a period the atomic radii
1.Increases
2.Decreases
3.Remain same
4.First decreases then increases
In how many forms do matter exists?
1.Three
2.Four
3.Five
4.Two
In O2 each oxygen atom is hybridized
1.sp3
2.sp2
3.sp
4.All
Ionization energy in a period generally
1.Increases
2.Decreases
3.No change
4.Variable trend
Linds method is employed for
1.Separation of gases
2.Expansion of gases
3.Compression of gases
4.Liquefaction of gases
Measurement of the degree of polarity is
1.Electron affinity
2.Ionic character
3.Ionization energy
4.Dipole moment
Molecular orbitals are filled according to
1.Auf bau principle
2.Hunds rule
3.Paulis Exclusion principle
4.All these
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
Shielding effect across the period
1.Increases
2.Decreases
3.Constant
4.None
The diffusion of gases at absolute zero will be
1.Unchanged
2.Slightly decreased
3.Slightly increased
4.Zero
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
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
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
The kinetic molecular theory of gases was put forward in 1738 by
1.Boltzman
2.Maxell
3.Clausius
4.Bernoulli
The molecule having ?-bond
1.H2O
2.C2H6
3.O2
4.NH3
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
The octet rule does not always hold for which of the following elements
1.C
2.O
3.F
4.P
The partial pressure exerted by the water vapours is called
1.Surface tension
2.Aqueous tension
3.Vapour pressure
4.Hydraulic pressure
The processes of effusion and diffusion are best understand by
1.Daltons law
2.Avogadros law
3.Grahams law
4.Charles law
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
The solid particles only posses
1.Translational motion
2.Vibrational motion
3.Rotational motion
4.All of above motions
The spreading of fragrance or scent in air is due to
1.Diffusion
2.Effusion
3.Attraction with air
4.Low dsensity
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
What is the abundant form of matter on earth?
1.Gas
2.Liquid
3.Solid
4.Plasma
What is the simplest form of matter?
1.Gas
2.Liquid
3.Solid
4.Semi solid
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
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?
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
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
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
Which of the following will have highest value of electron affinity
1.F
2.Cl
3.Br
4.I
Which of the solid does not contain covalent bond
1.Copper
2.Ice
3.Diamond
4.Graphite
Which one has maximum number of unpaired electrons?
1.6X
2.7Y
3.9Z
4.13W
Which one is not the absolute term of the element?
1.Ionization energy
2.Electron affinity
3.Electro negativity
4.Atomic size
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
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
Which one shows high %age of the ionic character?
1.H2O
2.HF
3.HCI
4.HBr
Which state of matter has the lowest density?
1.Gas
2.Liquid
3.Solid
4.Plasma
Which type of bond is formed by overlap of p orbitals
1.Pi (?)
2.Sigma(?)
3.Both
4.Neither
Who made volume and pressure correction to explain deviation of gases from ideal behaviour?
1.Clausius
2.Boltzman
3.Charles
4.Vander waal