1) When a beam of white rays is dispersed by a prism which colour will be refracted to a larger extent?
2) The modern atomic mass unit is based on ____
3) What do you mean by photoelectric effect?
4) A raincoat is made of what?
5) What is the value of Planck’s constant in SI units?
6) The total number of electrons present in 18 ml of water is ____
7) What is the velocity of light in m/s?
8) Which element on adding to natural rubber makes it less sticky in hot weather and less hard in cold weather?
9) The scientist who introduced the model of the atom similar to the solar system?
10) 3 g of a salt of molecular weight 30 is dissolved in 250 g of water. The molality of the solution is ____
Share
❤︎Answer
1) When a beam of white rays is dispersed by a prism which colour will be refracted to a larger extent?
Answer: Violet.
2) The modern atomic mass unit is based on ____
Answer: Carbon-12.
3) What do you mean by photoelectric effect?
Answer: Emission of electrons by electromagnetic radiation striking on a metal surface.
4) A raincoat is made of what?
Answer: Polychloroethene.
5) What is the value of Planck’s constant in SI units?
Answer: 6.625 x 10’34 Is.
6) The total number of electrons present in 18 ml of water is ____
Answer: 6.02 × 1024.
7) What is the velocity of light in m/s?
Answer: 3 x 108 m/s.
8) Which element on adding to natural rubber makes it less sticky in hot weather and less hard in cold weather?
Answer: Sulfur.
9) The scientist who introduced the model of the atom similar to the solar system?
Answer: Ernest Rutherford.
10) 3 g of a salt of molecular weight 30 is dissolved in 250 g of water. The molality of the solution is ____
Answer: 0.4m.
❤︎CarryOnLearningฅ^•ﻌ•^ฅ