Which of the following is not a chemical reaction?
1 Burning of paper
2 Digestion of food
3 Conversion of water into steam
4 Burning of coal
Water is a compound because 1 It exists as a solid, a liquid or a gas 2 It contains hydrogen and oxygen 3 It contains two different elements joined by chemical bonds 4 It cannot be split up into simpler substances by chemical means
Why is food necessary for human body ?
what are the sociological theories apply in pakistani society?
Which of the following substances undergoes chemical change on heating? 1 Sodium chloride 2 Silica 3 Lead nitrate 4 Platinum wire
Mesons are found in 1 ?-rays 2 Laser beam 3 X-rays 4 Cosmic rays
3 Answers ABC, Indian Army, JSSC,
Which is india’s primary nuclear facility?
What is a nuclear triad?
When was the first american rocket launched?
Which of the following elements is obtained from sea weeds? 1 Argon 2 Sulpur 3 Vanadium 4 Iodine
Carbon tetrachloride fire extinguisher should not be used in closed rooms, because it produces a poisonous gas called 1 Carbon monoxide 2 Phosphine 3 Phosgene 4 None of these
is the big bang theory correct, because as I wondered the explosion is too powerful that no one could survive after galaxies were created no life exist on it after the 3.5 billion years life exist so... my question is were is the life came from?
The difference between a nuclear reactor and an atom bomb is that 1 No chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction 2 No chain reaction takes place in atomic bomb while it takes place in a nuclear reactor 3 The chain reaction in nuclear reactor is controlled 4 None of these