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Identify the oxidation reaction among the following a) 2KClO3 → KCl + 3O2 b) Br - + AgNO3 → AgBr + NO3 - c) Br - + e- → Br2 d) Cu → Cu2+ + e- ...
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A chemical change a) changes matter from one form to another. b) destroys matter. c) creates matter. d) does not change matter in any way. ...
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Rutherford’s experiment on scattering of α-particles showed for the first time that the atom has a) Nucleus b) Electron c) Proton d) Neutron ...
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The G.C.D. of 1.08, 0.36 and 0.9 is: a) 0.03 b) 0.9 c) 0.18 d) 0.108 ...
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The least multiple of 7, which leaves a remainder of 4, when divided by 6, 9, 15 and 18 is a) 74 b) 94 c) 184 d) 364 ...
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The mass of a body id 5kg and its acceleration is 4m/s2 a) 30N b) 20N c) 40N d) None of these ...
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Name SI unit of pressure a) N/m^2 b) Pa c) both d) none ...
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A hammer of mass 1kg falls freely from a height of 2 m .Calculate The ke. Of the hammer just before it touches the ground? a) 196 b) 19.6 c) 1.96 d) none ...
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A ball is thrown with some velocity from the ground and it takes 6s to return back. calculate the maximum height a) 30m b) 45m c) 10m d) none ...
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Which of the following receives oxygenated blood from the lungs? a) Right atrium b) Left atrium c) Right ventricle d) Left ventricle ...
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512 + 592 a) 6080 b) 6082 c) 6083 d) 6000 ...
