General
✓✗Latin name of sodium is
- Kalium
- Natrium
- Stannum
- Sodium
General
✓✗3 g of carbon burns completely in 8 g of oxygen to give 11 g of carbon dioxide. How much carbon dioxide is formed when 3 g of carbon is burnt in 40 g of oxygen?
- 43 g
- 37 g
- 13 g
- 11 g
General
✓✗Pick the correct statement.
- 1 mole of atoms has a mass equal to the gram atomic mass
- 1 mole of atoms contains 6.022 × 1023 atoms
- The gram atomic mass of an element contains 6.022 × 1023 atoms
- All of these
General
✓✗Compounds made up of only two elements are called -
- Simple compounds
- Complex compounds
- Binary compounds
- Di compound
General
✓✗Water consists of hydrogen and oxygen in proportion of
- 8:1
- 1:8
- 1:4
- 2:32
General
✓✗Dihydrogen monoxide is the chemical name of
- Hydrogen gas
- Laughing gas
- Water
- Hydrogen peroxide
General
✓✗An element X forms the compound H2X with hydrogen. What are the valencies of hydrogen and X respectively?
- 2 and 1
- 1 and 2
- 1 and 4
- 2 and 4
General
✓✗Which of the following is a cation?
- Cuprous ion
- Ammonium ion
- Sodium ion
- All of these
General
✓✗The formula of the aluminium salt of an anion X is AlX3. What will be the formula of the magnesium salt of X?
- MgX2
- Mg3X2
- MgX
- Mg2X
General
✓✗Ionic compounds are formed by the combination between
- 2 metals
- 2 non-metals
- 1 metal & 1 non-metal
- Any of these