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Hassan
1.The yellowish colour of photochemical smog is due to the presence of
A. Nitrogen dioxide
B. Dinitrogen trioxide
C. Nitrous oxide
D. Nitrogen dioxide
2.The incarnation process can reduce the volume of the water by
A. One half
B. Not affected
C. One third
D. One half
3.__________% of the known universe is in the plasma state
A. 30
B. 99
C. 50
D. 30
4.Electron gas theory was proposed to explain the bonding in ____________ solids
A. Molecular
B. Ionic
C. Covalent
D. Molecular
5.In proteins, there are on the average _________ amino acid units for each turn in helix
A. 25
B. 27
C. 21
D. 25
6.In atomic particles
A. Mass of neutron is almost equal to mass of electron
B. e/m of a proton is almost equal to e/m of electron
C. Mass of proton is almost equal to mass of electron
D. Mass of neutron is almost equal to mass of electron
7.The extent of bonding of a light ray after passing through prism depends upon
A. Wavelength of photons
B. Wave number of photons
C. Energy of photons
D. Wavelength of photons
8.Splitting of spectral lines in closely spaced lines in presence of magnetic field is called:
A. Stark Effect
B. Zeeman Effect
C. Photoelectric Effect
D. Stark Effect
9.A bond is not formed:
A. When both forces become equal to each other
B. When repulsive forces become equal to zero
C. When attraction forces dominate repulsive forces
D. When both forces become equal to each other
10.If the electronegativity difference between bonded atoms is zero, the bond between the two atoms is:
A. Polar
B. Partially Ionic
C. Non-polar
D. Polar
11.VSEPR theory helps in explaining
A. Attraction between atoms
B. Size of molecule
C. Nature of bond
D. Attraction between atoms
12.The heat of hydration decreases with the increase in:
A. Number of neutrons
B. Size of cations
C. Size of atomic radii
D. Number of neutrons
13.Stronger the oxidizing agent, greater is the
A. Redox Potential
B. emf of the cell
C. Oxidation Potential
D. Redox Potential
14.The emf produced by Galvanic Cell is known as:
A. Redox Potential
B. Oxidation Potential
C. Cell Potential
D. Redox Potential
15.In nickel-cadmium battery, the cathode is composed of
A. Cd
B. Ni(OH)2
C. Ni
D. Cd
16.Concentrated sugar solution undergoes hydrolysis into glucose and fructose by enzyme called
A. Zymase
B. Invertase
C. Cellulose
D. Zymase
17.In Modern Periodic Table, the elements in Group II-B are
A. Zn, Cd, Pb
B. Zn, Cd, Hg
C. Zn, Cd, Ba
D. Zn, Cd, Pb
18.Which metal occurs as skeletal material in egg shell?
A. Calcium
B. Barium
C. Beryllium
D. Calcium
19.At which condition are hydrides of alkaline earth metals formed:
A. At high pressure
B. At room temperature
C. At high temperature
D. At high pressure
20.Which metal carbide is formed readily by the direct reaction?
A. Rubidium
B. Potassium
C. Sodium
D. Rubidium
21.Asbestos is hydrated _________ magnesium silicate.
A. Calcium
B. Aluminium
C. Barium
D. Calcium
22.Formula of lead suboxide is:
A. Pb2O3
B. Pb2O
C. PbO
D. Pb2O3
23.Phosphine can be produced by __________ of phosphorous acid
A. Hydration
B. Hydrolysis
C. Oxidation
D. Hydration
24.Which Noble Gas is used in bacterial lamps?
A. Xenon
B. Radon
C. Argon
D. Xenon
25.The most durable metal plating on iron to protect against corrosion is:
A. Tin plating
B. Zinc plating
C. Nickel plating
D. Tin plating
26.Colour of the transition metal ions/ compounds is due to the electrons present in:
A. d-orbital
B. s-orbital
C. p-orbital
D. d-orbital
27.The traveler __________ a long detour to water the camels
A. Took
B. Saw
C. Sought
D. Took
28.Shah Jahan __________ the great mosque at Delhi.
A. Founded
B. Raised
C. Created
D. Founded
29.He was __________ of theft in the court
A. Charged
B. Reported
C. Blamed
D. Charged
30.He __________ on a very extraordinary ambition
A. Arrived
B. Decided
C. Came
D. Arrived
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