Major gaseous pollutant of the thermal power station is
1). H2S
2). NH3
3). NO2
4). S02
1. Detergents used for cleaning clothes and utensils contain
2. The scientist who experimentally proved the existence of positron is
3. Which one element from below list is liquid at room temperature?
5. Which of the following is an iron ore ?
7. Cement is formed by strongly heating a mixture of
9. In which of the following substances all carbon atoms are quaternary in nature ?
10. Which one is heaviest naturally occurring element of the periodic element?