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CBSE->Std 10 Questions

Total Questions 2595
electricity
importance of novel
c++
Excretory system
agriculture
democracy
How does chemical coordination takes place in animals?
WHAT IS METAL HYDROXIDE
HOW WILL YOU PROVE THAT A GIVEN SALT IS A CARBONATE OF METAL?
what is meant by voluntary and involuntary actions?
Why is Bulgaria known as the country of roses?
NAME TWO METALS WHICH WILL DISPLACE HYDROGEN FROM DILUTE ACIDS AND TWO METALS WHICH WILL NOT
YOU ARE GIVEN A HAMMER,A BATTERY ,A BULB ,WIRES AND A SWITCH. 1.HOW COULD USE TO DISTINGUISH BETWEEN SAMPLES OF METALS AND NON METALS? 2.ASSESS THE USEFULNESS OF THESE TESTS IN DISTINGUISHING BETWEEN METALS AND NON METALS?
FOOD CANS ARE COATED WITH TIN AND NOT WITH ZINC BECAUSE
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water.The element is likely to be
which metal do not corrode easily?
what chemical process is used for obtaining a metal from its oxide?
1.show the formation of Na2O and MgO by the transfer of electrons. 2.what are the ions present in these compounds?
write the electron dot structures for sodium ,oxygen and magnesium?
chemical equations of solvey process ?