An Alien Hand : ncert solution - class 7

Comprehension check (page-69)

1. How does Tilloo manage to find his way to the 'forbidden passage'?

Ans:- When Tilloo’s father was enjoying a midday sleep Tilloo managed to find his father’s security card. The security card helped him make his way to the forbidden passage.

2. What did Tilloo hope to see once he emerged from his underground home?

Ans:- He wanted to see the sun and the stars once he emerged from his underground home.

3. Why did Tilloo's father advise him not to try to reach the surface of the planet?

Ans:- The surface of the planet was not at all suitable for Tilloo because of its low temperature and thin oxygen in its atmosphere.

4. What changes had occurred, which forced people to live in underground homes?

Ans:- The sun’s changes in heat forced people to live in underground homes because the temperature of the atmosphere lowered down and the air became very thin. Animals and birds became extinct. So it was not possible for human beings to survive in such harsh conditions.

Comprehension Check (page-71)

1. Why was everyone in the Control room greatly excited?

Ans:- Everyone was excited in the control room because they thought that the two spacecraft would get very soon the information about the life on the planet.

2. Was the spacecraft manned or unmanned? How do you know it?

Ans:- The spacecraft was unmanned. It had devices like hands which were set to accomplish only a few particular jobs.

3. What did Number One and Number Two suggest should be done about the alien spacecraft?

Ans:- Number one suggested that they should follow the ‘wait and watch policy. Number two suggested that it would not be wise to destroy the spacecraft.

Comprehension Check (page-73)

1. What do you think the mechanical hand was trying to do?

Ans:- I think the mechanical hand was trying to collect the sample of soil to find out whether it had signs of life or not.

2. Tilloo pressed the red button "the damage was done". What was the damage?

Ans:- The mechanical hand stopped working after Tilloo pressed the red button. The hand became inactive then and there.

3. Where had the spacecraft come from?

Ans:- The spacecraft had come from the earth.

4. On which planet do Tilloo and his parents live?

Ans:- Tilloo and his parents live on a planet where spacecraft came and took the sample of the soil. Its surface is very cold and its atmosphere has thin oxygen where life is not normally possible.

Discuss the following topics in groups.

1. If you had to live in a home-like Tilloo's, what parts of life would you find most difficult? What compensations might there be?

Ans:- If I had to live in a home-like Tilloo I think the most difficult part of life would be confinement in a room. The compensations would only be light and heat for life and safety.

2. What, if anything, might drive mankind to make their homes underground?

Ans:- If anything might drive mankind to make their homes underground, people would be sick and become extinct one day like some of the birds and animals.

3. Do you think there is life on other planets? Can you guess what kind of people there may be on them? In what way are they likely to be different from us?

Ans:- I don’t think there is life on other planets. If there is a life they must have settled in their environment. They are adapted to survive in harsh conditions. They must be different from us in all respect.