Questions

How many atoms are present in one molecule of Ozone?

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

The _____ of energy in India are met from both commercial and non commercial sources. The most _____ sources of energy today are coal and natural gas, hydro
electricity and nuclear power. On the other hand, firewood, cow-dung cakes and vegetable waste etc. _____ non commercial forms of energy. While non commercial
forms of energy _____ demand, coal is the _____ source of commercial energy in India.

and non commercial sources. The most _____ sources of energy today are coal and natural gas

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select ‘No Error’.

Good role models in classrooms and in communities are the most important (1)/ part of getting educate as the actions and decisions (2)/ of role models impact the behaviour of others. (3)/ No error (4)

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

The new civilisation of Righteousness and __________, and therefore of Brotherhood, of ordered Liberty, of Peace, of __________, cannot be built up until the elements are removed ______________ have brought the old civilisation crashing about our ears. _________________ is it necessary that the War shall be fought out to its appointed end, and that _______________ premature peace shall leave its object unattained.

Righteousness and __________, and therefore of Brotherhood,

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

So apart from having

A- colleagues would go out for tea at periodic intervals

B- the routine coffee served

C- from the cafeteria my

Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?

What is the heat generated (in J) in a heating element of resistance 1000 Ω when a current of 0.1 A passes through it for 25 seconds?

Work done by a passenger standing on a platform holding a suitcase weighing 10kg is