LPG is a mixture of _______.
1). methane and butane
2). butane and propane
3). methane and propane
4). ethane and propane
1. When cone H2S04 is added to dry KNO3 brown fumes are evolved. These fumes are due to
2. Question 7.16:Which of the following does not react with oxygen directly?Zn, Ti, Pt, Fe
4. Which of the following is used to increase the antiknocking property of petrol
6. Detergents clean surfaces on the principle of
7. Which of the following fibres catches fire least
8. Question 14.11:What are the major causes of water pollution? Explain.