The Chemical formula of Ammonium chloride is ___________.
1). (NH4)2Cl
2). NH4Cl3
3). NH4Cl2
4). NH4Cl
1. The addition of gypsum to Portland cement helps in :
2. Catalyst is a substance which
3. The value of gas constant R in Ergs deg–1 mole–1 is
5. What is the accounting year of the Reserve Bank of India ?
6. Which of the following substance's smell is similar to Ethanoic acid?
7. Atomic number of which of the following elements is greater than that of Aluminium?
8. How many electrons are there in a Hydrogen atom?
9. Oxide of sulphur present in the atmosphere are washed down by rains to cause :
10. Iron is prevented from rusting by coating with zinc. This process is called as