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CBSE / Chemistry Questions

Total Questions 1082
why does a desert cooler cools better on a hot dry day
a ballon kept in sun burns why
on a hot sunny day why do people sprinkle water on the roof or the open ground
how is the high compresability of gas is use full in towns
what will happen if the pressure is reduced on solid carbon dioxide
WHAT IS DOUBLEDISPLACEMENT REACTION ??
Is fire a matter? Explain.
what will happen if the pressure is reduced on solid carbon dioxide
why do people respair lot on a hot humid day
liquid and gas can be compressed why solids it is hard to compress
explain why solids have fixed shape but liquid and gasses have no fixed shape
why do we see droplets collected of water surface of a glass contaniers
differentiate between corrosion &rancidity
Is magnet a metal? why it's not on the periodic table?
how we explain the observation of water boiling at steady temperature while being heated continuously?
WHAT IS PHILOSOPHERS STONE? WHATS THE USE OF IT?
how do metal carbonates and metal hydrogen-carbonates react with acids
how can we understand whether a reaction is combination or decomposition reactions ?
what are the disadvantages of decomposition rection ??
what is a chemical reaction