Can Q and S, both be metals ? Justify your answer.

Can the experimental probabilty of an event be greater than 1? Justify your answer.

What do you understand by the term 'non-stoichiometric hydrides' ? Do you expect this type of hydrides to be formed by alkali metals'? Justify your answer.

Is * defined on the set {1,"2,"3,"4,"5}" by "" a * b"="LdotCdotMdot of a and b a binary operation? Justify your answer.

Can two numbers have 12 as their HCF and 512 as their LCM? Justify your answer.

When acidulated water (dil. H_(2)SO_(4) solution) is electrolysed, will pH of the solution be affected? Justify your answer.

A refrigerator transfers heat from the cold coling coils to the warm surroundings. Is it against the second law of thermodynamics? Justify your answer?

Two adjacent angles are equal. Is it necessary that each of these angles will be a right angles ? Justify your answer.

What is the work done by the force of gravity on a satellite moving round the Earth ? Justify your answer.

Do different species of plant a growing in the same area show the same rate of tranpiration at a particular time ? Justify your answer.