Force and Pressure — Science STD 8 — Question

Name the fibre used for making parachutes and rock climbing ropes.

Fill in the blanks with the help of words given in bracket after each sentence. Water which is suitable for _________ is called ________ water. (washing, bathing, drinking, potable, soft).

What is the name of very high frequency sounds which cannot be heard by the human ear?

State whether the following statements are True or False. If false, correct the statement:
External fertilisation can occur both in water and on land.

What are non-combustible substances? Name three non-combustible substances.

What is the maximum volume it can measure?

Fill in the following blanks with suitable words: The process of ______________ ensure continuity of life on earth.

In which sort of reproduction are gametes fuse?

Name one ‘single cell’ which behaves like a complete organism.

Mention the name of the most popular resource for visually challenged persons which can make them read and write.