Among the following, the secondary pollutant is :

In water pollution, industries are said to be the :

At greatest risk for food-borne illness :

Carbohydrate content in potato per 100g is :

Which of the following plants can be used as indicators SO air pollution ?

One of the main function of the earth's ozone layer is to :

The ozone layer is present in which atmospheric layer ?

The gas associated with global warming is :

Which refrigerant is commonly used in cold storage in our country ?

The Pakistani population receives the largest dose of ionizing radiation from :

Which of the following vitamins is water soluble ?

Richest source of Riboflavin is :

Which of the following does not cause soil erosion ?

Which are air pollutants ?

Proteins are made up of :

Which of the following does not vary predictably with the depth of aquatic environment ?

The ozone layer protects the earth from  _______  sent by the Sun.

Mango variety having strong flavor is :

Prevailing winds affect a region's climate by :

Pineapple variety suitable for canning is :