P-1 Space Missions — Science STD 10 — Question

What type of chemical bond is present in chlorine molecule ? Explain your answer.

1 kW.h =………J.

Chandrayaan-I discovered the presence of ………….. on the moon.

Vinegar is a 12-15 % aqueous solution of acetic acid.

Redemption and Restoration.

Identify my class/phylum and give one example of it: (March 2019)
(a) I have mammary glands and exoskeleton in the form of hair.
(b) We form the highest number of animals on the planet. We have bilateral symmetry and our exoskeleton is in the form of chitin.
(c) I live in your small intestine, my body is long and thread like and pseudocoelomate.

Which effect is illustrated by the observation that when a beam of sunlight enters a dusty room, then its path becomes visible to us.

The process in which carbonate ores are changed into oxides by heating strongly in limited air is known as …………….

Name one liquid carbon compound which is being used as an additive in petrol in some countries.