The major harmful gas emitted by automobile vehicle which causes air pollution is
1). Carbon Monoxide
2). Methane
3). Carbon dioxide
4). Ozone gas
1. Which of the following will replace hydrogen from acids to form salts ?
2. The influence of temperature on reaction rate is predicted by
3. All isotopes of the same element have ______________
4. Which of the following is not a precious semiprecious stone?
5. Milk of Magnesia is a suspension of :
6. Which of the following is not a method of estimating national income?
8. Raw materials used for the manufacture of glass are