The correct answer is A
Zinc metal liberates hydrogen gas on reaction with dilute HCl, but hydrogen gas is not liberated, when zine is reacted with nitric acid. What is the rea...
Which of the following statement(s) is/are true?
I. Air expands on heating
II. The warm air is heavier than the cold air
Which of the following is a physical change?
An ice block with a piece of lead embedded in it floats in water. If ice melts the water level –
If cream is removed from milk, its density –
Which of the following is the correct set-up for electrolytic refining of silver?
What is a fertiliser that supplies two or more than two primary nutrients called?
What is the principle behind the operation of a washing machine?
Up to what temperature can a mercury thermometer measure?
