Which of the following is / are the characteristic/ characteristics of Indian coal?
1. High ash content
2. Low sulphur content
3. Low ash fusion temperature

Select the correct answer using the codes given below.

During a thunderstorm, the thunder in the skies is produced by the
1. meeting of cumulonimbus clouds in the sky
2. lightning that separates the nimbus clouds
3. violent upward movement of air and water particles

Select the correct answer using the codes given below.

Which one among the following industries is the maximum consumer of water in India?

Fruits stored in a cold chamber exhibit longer storage life because

Ball bearings are used in bicycles, cars, etc., because

Consider the following phenomena:
1. Size of the sun at dusk
2. Colour of the sun at dawn
3. Moon being visible at dawn
4. Twinkle of stars in the sky
5. Polestar beingvisible in the sky

Which of the above are optical illusions?

Rainbow is produced when sunlight falls on drops of rain.
Which of the following physical phenomena are responsible for this?

1. Dispersion 
2. Refraction 
3. Internal reflection

Select the correct answer using the codes given below. 

Many transplanted seedlings do not grow because

Which of the following statements is / are correct?
1. Viruses lack enzymes necessary for the generation of energy.
2. Viruses can be cultured in any synthetic medium.
3. Viruses are transmitted from one organism to another by biological vectors only.
Select the correct answer using the codes given below.

Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss?

1. Hard and waxy leaves 
2. Tiny leaves or no leaves 
3. Thorns instead of leaves

Select the correct answer using the codes given below. 

The known forces of nature can be divided into four classes, viz, gravity electromagnetism, weak nuclear force and strong nuclear force. with reference to them, which one of the following statements is not correct?

The efforts to detect the existence of Higgs boson particle have become frequent news in the recent past. What is /are the importance/importances of discovering this particle?

1. It will enable us to understand as to why elementary particles have mass.
2. It will enables us in the near future to develope the technology to transferring matter from one point to another without traversing the physical space between them.
3. It will enable us to create better fuels for nuclear fission.
Select the correct answer using the codes given below:

Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to
1. resist drought and increase absorptive area
2. tolerate extremes of PH
3. Resist disease infestation

Select the correct answer using the codes given below:

The speed of a truck is 1/3 rd the speed of a train. The train covers 1230kms in 5 hours. What is the speed of the truck?

A train crossed a platform in 43 seconds. The length of the train is 170 metres. What is the speed of the train?