| 1 |
Bases react with acids to form water and........ |
- A. Hydrogen ions
- B. Ammonia
- C. Salt
- D. Hydroxide ions
|
| 2 |
Bromine is |
- A. Solid
- B. Gas
- C. Liquid
- D. All of these
|
| 3 |
An element of the third period is the periodic table. |
|
| 4 |
Heating of solid potassium chlorate produces a gas. |
- A. Chlorine
- B. Carbon dioxide
- C. Carbon mono oxide
- D. Oxygen
|
| 5 |
Large variey of compounds exists are. |
- A. Acids
- B. Bases
- C. Alkalies
- D. Salt
|
| 6 |
To make bioplastic, we use. |
- A. Starch
- B. Glycerol
- C. Distilled water
- D. Starch, Glycerol and distilled water.
|
| 7 |
Tartaric acid obtain form. |
- A. Fats
- B. Tarmarind , grapes
- C. Apples
- D. Citrus fruits
|
| 8 |
Carbon burns in air to release energy along with the formation of. |
- A. Carbon dioxide and hydrogen
- B. Carbon monoxide and hydrogen
- C. Carbon di oxide
- D. Carbon dioixe and water
|
| 9 |
Which of the following is magnetic substance. |
- A. Glass
- B. Marble
- C. Gold
- D. Cobalt
|
| 10 |
Spectroscope is an instrument used to edamine the wavelength of. |
- A. Water waves
- B. Sound waves
- C. Light waves
- D. Air waves
|