A body of mass 10 kg is kept at a height of 5 m. It is allowed to fall and reach the ground.

1. What is the total mechanical energy possessed by the body at the height of 2 m assuming it is a
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The kind of lens required to correct Myopia.

Calculate the total resistance across AB:

Write the IUPAC names of each of the following:

Write a balanced chemical equation: Reaction of carbon powder and concentrated nitric acid.

Give two reasons for the "means of transport" being called the lifelines of a nation’s economy.

Give two ways in which forests are important.

Which multi-purpose project provides power to both Punjab and Himachal Pradesh?

Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is in excess.

Give one geographical reason: Red soil requires irrigation.

With reference to the terms Mechanical Advantage, Velocity Ratio and efficiency of a machine, name and define the term that will not change for a machine of a given design.

Give any two similarities between the ideologies of Nazism and Fascism.

Answer the following questions with reference to Norah Burke’s short story "The Blue Bead"

(i) Describe Sibia’s experience at the Bazaar. What were the things that filled her with wonder?

(ii) Who were the...

Give two advantages of using bio-gas as a source of power.

Read the extract given below and answer the questions that follow:

There’s nobody on the house-tops now---
Just a palsied few at the windows set;
For the best of the sight is, all allow,
At the...

All life on Earth is supported by Photosynthesis.