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Find vapour density of mixture having 64% by mass of CH_(4) , 32% by mass of O_(2) and remaining H_(2)

Find vapour density of mixture having 64% by mass of CH_(4) , 32% by mass of O_(2) and remaining H_(2)

If the co-efficient of variation of two frequeny distribution are 58% and 64% and their SD are 21.2 and 15.2 resp.. Find AM of the distribution.

In a survery it is to be found that 70% of employees like bananas and 64% like apples. If x% like both bananas and apples, then

A solution of 36% water and 64% acetaldehyde (CH_(3)CHO) by mass. Mole fraction of acetaldehyde is

In a survey it is to be found that 70% of employees like bananas and 64% like apples. If x% like both bananas and apples, then

What per cent of the earth is covered with land and water respectively? (a) 29% of the earth is covered with land and 71% is covered with water. (b) 71% of the earth is covered with land and 29% is covered with water. (c) 36% of the earth is covered with land and 64% is covered with water. (d) 64% of the earth is covered with land and 36% is covered with water.

An alpha-particle of mass m suffers 1 -dimentinal eleastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing 64% of its initial kinetic energy. The mass of the nucleus is :