Class XI

One newton is the force ___________
  1. of gravity on a 1 kg body
  2. of gravity on a 1 g body
  3. which gives a 1 kg body an acceleration of 1m/s2
  4. which gives a 1 kg body an acceleration of 1m/s2
The first human ho rmone produced by recombinant DNA technology is :-
  1. Insulin
  2. Estrogen (
  3. Thyroxin
  4. Progesterone
A projectile is fired from the surface of the earth with a velocity of 5 ms–1 and angle  with the horizontal. Another projectile fired from another planet with a velocity of 3ms–1 at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in ms–2) given g = 9.8 m/s2
  1. 3.5
  2. 5.9
  3. 16.3
  4. 110.8
Which of the following organic compounds has same hybridization as its combustion product(CO2)?
  1. Ethane
  2. Ethyne
  3. Ethene
  4. Ethanol
If the kinetic energy of the particle is increased to16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is :-
  1. 25
  2. 75
  3. 70
  4. 60
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