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Home » Medical Papers » Aptitude Test - 33
Hassan
1.Speed of sound through a gas is measured as 340 m/s at pressure P1 and temperature T1. What will be the speed of sound if pressure of gas is doubled but temperature is kept constant?
A. 342 m/s
B. 340 m/s
C. 170 m/s
D. 342 m/s
2.The stress-strain graph, deduced the following limits successively
A. Proportional limit, yield limit, elastic limit
B. Yield limit, elastic limit, proportional limit
C. Proportional limit, elastic limit, yield limit
D. Proportional limit, yield limit, elastic limit
3.An organic compound has empirical formula C3H3O, if molar mass of compound is 110.15 gmol-1. The molecular formula of this organic compound is (A, of C=12, H=1.008 and O=16)
A. C6H6O2
B. C3H3O
C. C9H9O3
D. C6H6O2
4.When 8 grams (4 moles) of H2 react with 2 moles of O2, how many moles of water will be formed?
A. Five
B. Four
C. Six
D. Five
5.The number of molecules in 22.4 dm3 of H2 gas at 0 °C and 1 atm are
A. 60.2 x 1023
B. 6.02 x 1022
C. 6.02 x 1025
D. 60.2 x 1023
6.Correct order of boiling points of the given liquid is
A. H2O > HF > HCl > NH3
B. HF > H2O > HCl > NH3
C. H2O > HF > NH3 > HCl
D. H2O > HF > HCl > NH3
7.The relative energies of 4s, 4p and 3d orbitals are in the order
A. 3d < 4p <4s
B. 4s < 3d < 4p
C. 4p < 4s < 3d
D. 3d < 4p <4s
8.With increase in the value of Principal Quantum Number ‘n’, the shape of the s-orbitals remains the same although their sizes
A. Decrease
B. Increase
C. Remain the same
D. Decrease
9.The angle between unhybridized p-orbital and three sp2 hybrid orbitals of each carbon atom in ether is:
A. 120°
B. 90°
C. 109.5°
D. 120°
10.In ‘H-F’ bond electronegativity difference is ‘1.9’. What is the type of this bond?
A. Polar covalent bond
B. Non-polar covalent bond
C. Pi (Ï€) bond
D. Polar covalent bond
11.‘ΔH’ will be given a negative sign in
A. Exothermic reactions
B. Decomposition reactions
C. Dissociation reaction
D. Exothermic reactions
12.Lattice energy of an ionic crystal is the enthalpy of
A. Combustion
B. Dissociation
C. Dissolution
D. Combustion
13.As number of solute particles increases, freezing point of the solution
A. Remains the same
B. Increases
C. First increases, then decreases
D. Remains the same
14.Boiling point constants help us to determine
A. Molar masses
B. Volumes
C. Pressures
D. Molar masses
15.In electrolysis of aqueous CuCl2, the metal deposited at cathode is
A. Sodium
B. Aluminium
C. Lead
D. Sodium
16.In MgCl2, the oxidation state of ‘Cl’ is
A. Zero
B. +2
C. -2
D. Zero
17.Formation of NH3 is reversible and exothermic process, what will happen on cooling?
A. More reactant will form
B. More N2 will be formed
C. More H2 will be formed
D. More reactant will form
18.A buffer solution is that which resists/minimizes the change in
A. pOH
B. pH
C. pKa
D. pOH
19.In some reactions, a product formed acts as a catalyst. The phenomenon is called
A. Negative Catalysis
B. Activation of Catalyst
C. Hetergeneous catalysis
D. Negative Catalysis
20.The reaction rate in forward direction decreases with the passage of time because
A. Concentration of reactants decrease
B. Concentration of product decreases
C. The order of reaction changes
D. Concentration of reactants decrease
21.Which one remains same along a period?
A. Atomic radius
B. Melting point
C. Number of shells (orbits)
D. Atomic radius
22.More the ionization energy of an element:
A. More the electropositivity
B. More the reducing power
C. Less the metallic character
D. More the electropositivity
23.Carbon has the unique ability to form long chains by bonding with other carbon atoms. This property of self-linking in carbon is known as:
A. Condensation
B. Polymerization
C. Cyclization
D. Condensation
24.Oxidation state of ‘Mn’ in KMnO4, K2MnO4, MnO2 and MnSO4 is in the order:
A. +7, +6, +2, +4
B. +6, +7, +2, +4
C. +7, +6, +4, +2
D. +7, +6, +2, +4
25.Which pair of transition elements shows abnormal electronic configuration?
A. Sc and Zn
B. Cu and Sc
C. Zn and Cu
D. Sc and Zn
26.The acid rain water has pH:
A. Below 5
B. 7
C. Between 5 and 7
D. Below 5
27.In Contact Process for manufacturing sulphuric acid, Sulphur trioxide (SO3) is not absorbed in water because
A. The reaction does not go to completion
B. The reaction is highly exothermic
C. The reaction is quite slow
D. The reaction does not go to completion
28.In modern Haber Process Plants, the temperature maintained during the process is
A. 670 – 770 K (400 °C – 500 °C)
B. 270 – 370 K (0 °C – 100 °C)
C. 370 – 470 K (100 °C – 200 °C)
D. 670 – 770 K (400 °C – 500 °C)
29.In the Haber process for manufacturing of ammonia, Nitrogen is taken from
A. Proteins occurring in living bodies
B. Ammonium salts obtained industrially
C. Air
D. Proteins occurring in living bodies
30.Ethene on polymerization, gives the product polyethene. This reaction may be called as
A. Addition
B. Condensation
C. Substitution
D. Addition
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