Q1: Number of electrons, protons and neutrons in chemical species A, B, C and D is given below: Now, answer […]

Q1: Glucose has the molecular formula C6H12O6. Calculate :(a) Its molecular mass. (b) The number of atoms in one molecule of

Long Answer Type Questions Q1. Fractional distillation is suitable for separation of miscible liquids with a boiling point difference of

Q1: Discuss the factors which affect evaporation. Ans: Evaporation is the process by which liquid changes into vapour at temperatures below its

Q1: How do biotic and abiotic factors affect crop production?Ans: Living organisms such as honey bees and earthworms aid improve crop

Q1: Explain how sound is produced by your school bell.Ans: The sound of the bell depends upon the vibration of the

Q1: When the work is said to be done?Ans: When a force acts on an object and moves it in the

Q1: What do you mean by free fall?Ans: It is the object falling towards earth under the influence of attraction force

Q1: An object experiences a net zero external unbalanced force. Is it possible for the object to be traveling with

Q1: Distinguish between speed and velocity.Ans: Speed of a body is the distance travelled by a body  per unit time while