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- Question
A bimetal made copper and iron strips welded together is straight at room temperature. It is held vertically with iron strip towards left and copper strip towards right. If this bimetal is heated , it will
Options- A. remain straight
- B. bend towards right
- C. bend towards left
- D. none of these
- Correct Answer
- bend towards left
- 1. kilohertz is a unit which measures
Options- A. power used by a current of one ampere
- B. electromagnetic radio wave frequencies
- C. voltage
- D. electric resistance Discuss
- 2. Atoms of an element differ from those of all other elements in
Options- A. atomic number and electronic configuration
- B. number of neutrons and number of valence electrons
- C. atomic number and number of valence electrons
- D. number of neutrons and electronic configuration Discuss
- 3. Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
Options- A. Thorium
- B. Radium
- C. Plutonium
- D. Radan Discuss
- 4. Which of the following is used for removing air bubbles from glass during its manufacture?
Options- A. Arsenous oxide
- B. Potassium carbonate
- C. Soda ash
- D. Feldspar Discuss
- 5. What are the soaps?
Options- A. Salts of silicates
- B. Mixture of glycerol and alcohols
- C. Sodium or potassium salts of heavier fatty acids
- D. Esters of heavy fatty acids Discuss
- 6. The vast resources of unutilised natural gas can be used in the production of
Options- A. graphite
- B. Synthetic petroleum
- C. fertilisers
- D. carbide Discuss
- 7. Glass is made of the mixture of
Options- A. quartz and mica
- B. sand and silicates
- C. salt and quartz
- D. sand and salt Discuss
- 8. The minimum values of annual receipts of solar radiation occur at
Options- A. the equator
- B. the tropics
- C. the arctic
- D. None of the above Discuss
- 9. The major countries of central America are
Options- A. Belize, Costa Rica, Panama
- B. China, Taiwan, Japan
- C. Iran, Iraq, Saudi Arabia, Kuwait
- D. All of the above Discuss
- 10. The ministry of Water Resources lays down policies and programmes for the development and regulation of the country's water resources. It covers
Options- A. sartorial planning, coordination and policy guidelines
- B. technical examination and techno- appraisal of project providing central assistance to specific projects
- C. facilitation of external assistance in resolution of interstate water disputes, policy formulation planning and development of ground water resources
- D. All of the above Discuss
More questions
Correct Answer: electromagnetic radio wave frequencies
Correct Answer: atomic number and electronic configuration
Correct Answer: Thorium
Correct Answer: Arsenous oxide
Correct Answer: Sodium or potassium salts of heavier fatty acids
Correct Answer: fertilisers
Correct Answer: sand and silicates
Correct Answer: the arctic
Correct Answer: Belize, Costa Rica, Panama
Correct Answer: All of the above
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