What is the common name of the solution of calcium hydroxide?
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Goods which are consumed together are called?
What is an endothermic reaction?
The pH of a solutiion is 3. When its pH changes to 6, then H+ ion concentration
Which of the following is an excretory organ of cockroach?
Which cells give rise to various organs of the plant and keep the plant growing?
Organisms that use light to prepare food are known as _____.
Which of the following disease is not caused by water pollution?