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Home » Classes » Intermediate » Aptitude Test - 2
1.Gases deviate from ideal behaviour at high pressure. Which of the following is correct for non-ideal behaviour of gases
A. At high pressure, the gas molecules move in one direction only
B. At high pressure, the collisions between the gas molecules are increased
C. At high pressure, the volume of the gas becomes insignificant
D. At high pressure, the gas molecules move in one direction only
2.If the number of gas molecules are doubled in a certain volume of a gas, the pressure is.
A. Decreased to half
B. Doubled
C. Increased to four time
D. Decreased to half
3.If absolute temperature of the gas is doubled and the pressure is reduced to one half the volume the gas will.
A. Remains uncharged
B. Increase four time
C. Reduce to 1/4
D. Remains uncharged
4.The diffusion of gases at absolute zero will be
A. Unchanged
B. Zero
C. slightly decreases
D. Unchanged
5.NaCI is face centered cubic structure. The Na ion at the face of the unit cell is shared by
A. 2-unit cells
B. 4-unit cells
C. Only one unit cell
D. 2-unit cells
6.Which of the following elements in its crystalline form will have the lowest enthalpy change of vaporization
A. Chlorine
B. Argon
C. Phosphorus
D. Chlorine
7.The boiling point of water at Murree Hills.
A. 90oC
B. 98oC
C. 100oC
D. 90oC
8.Which one of the following inter molecular forces are present in neon gas molecules.
A. Hydrogen bond
B. dipole -Dipole attraction
C. London dispersion force
D. Hydrogen bond
9.In which , case particles are separated from each other.
A. Fusion
B. Condensation
C. Neutralizations
D. Fusion
10.When water freezes at 0�C, its density decreases due to
A. Cubic structure of ice
B. Empty spaces present in the structure of ice
C. Change of bond lengths
D. Cubic structure of ice
11.Existence of an element in more than one crystalline form is known as.
A. Anisotropy
B. Allotropy
C. Isomorphism
D. Anisotropy
12.The polarizabilities of elements mostly increase down the group due to the reason that
A. The atomic numbers increase
B. Number of protons increase
C. Number of shells increase along, with increase of shielding effect
D. The atomic numbers increase
13.Polymorphic substances have
A. Same physical and chemical properties
B. Different physical and chemical properties.
C. Same physical but different chemical properties
D. Same physical and chemical properties
14.Which of the following can form H-bonds
A. NH3
B. C2H6
C. NaCI
D. NH3
15.The mass of one mole of electron is:
A. 1.008 mg
B. 0.184 mg
C. 0.54 mg
D. 1.008 mg
16.27 g of Al will react with how much mass of O2 to produce Al2O3:
A. 8 g of oxygen
B. 16 g of oxygen
C. 32 g of oxygen
D. 8 g of oxygen
17.The number of moles of NO2 which contains 16 g of oxygen:
A. 0.25
B. 0.5
C. 1
D. 0.25
18.The volume occupied by 2.0 g of Ne at STP:
A. 2.24 dm3
B. 22.4 dm3
C. 1.12 dm3
D. 2.24 dm3
19.A sample in the ionization chamber of mass spectrometer is ionized by:
A. Electrons
B. Proton
C. Neutron
D. Electrons
20.Which one of the following pair is not iso-electronic:
A. CO, N2
B. Na+, Ne
C. Ca, Ar
D. CO, N2
21.Which one of the following is not a molecular ion:
A. N+2
B. CH+4
C. C6H+8
D. N+2
22.180 g of glucose contains number of hydrogen atoms:
A. 3.6 x 1023
B. 6.0 x 1023
C. 7.2 x 1023
D. 3.6 x 1023
23.Who first of all determined atomic masses of elements:
A. J. Berzelius
B. J.J. Thomson
C. Johon Dalton
D. J. Berzelius
24.The mass of H-atom is 1.008 a.m.u. Its mass in kg should be:
A. 1.008 x 1.661 x 10 -23 kg
B. 1.008 1.661 x 10-27 kg
C. 1.008 x 1.661 x 10-27 kg
D. 1.008 x 1.661 x 10 -23 kg
25.The atomicity of one molecule of Haemoglobin is:
A. 10,000
B. 68,000
C. 17,000
D. 10,000
26.Formation of uninegative ion is:
A. Exothermic
B. Endothermic
C. Both A & B
D. Exothermic
27.Which of the following elements has nine isotopes:
A. Ca
B. Pd
C. Cd
D. Ca
28.Which of the following will form single peak in mass spectrograph:
A. Iodine
B. Arsenic
C. Fluorine
D. Iodine
29.Which one of the following contains maximum no. of molecules:
A. 16.0 g of CH4
B. 16.0 g of O2
C. 16.0 g of SO2
D. 16.0 g of CH4
30.Atoms of all the elements always contain in nucleus:
A. Proton
B. Proton and neutron
C. Neutron
D. Proton
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