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- Question
The blue colour of the clear sky is due to
Options- A. Diffraction of light
- B. Dispersion of light
- C. Reflection of light
- D. Refraction of light
- Correct Answer
- Dispersion of light
ExplanationA clear cloudless day-time sky is blue because molecules in the air dissipate blue light from the sun more than they dissipate red light. When we look towards the sun at sunset, we see red and orange hues on the grounds because the blue light has been scattered out and away from the line of sight.
- 1. Which one of the following types of waves are used in a night vision apparatus?
Options- A. Radio waves
- B. Microwaves
- C. Infra-red waves
- D. None of the above Discuss
- 2. The Ghatampur thermal power plant recently approved by Cabinet is to be setup in
Options- A. Rajasthan
- B. Uttar Pradesh
- C. Karnataka
- D. Madhya Pradesh Discuss
- 3. What is Gol Gumbadh ?
Options- A. Mausoleum of Hyder Ali
- B. Mausoleum of Aurangazeb
- C. Mausoleum of Chand Bibi
- D. Mausoleum of Mohammed Adil Shah Discuss
- 4. ?Sun Temple? is situated in the state of __________
Options- A. Rajasthan
- B. Andhra Pradesh
- C. Odisha
- D. Tamil Nadu Discuss
- 5. Who among the following Sikh Gurus had laid the foundation of Amritsar?
Options- A. Guru Amar Das
- B. Guru Ram Das
- C. Guru Arjan Dev
- D. Guru Har Govind Discuss
- 6. As you go down into a well, your weight
Options- A. increases slightly
- B. decreases slightly
- C. remains exactly the same
- D. None of the above Discuss
- 7. The weight of an object will be minimum when it is placed at ?
Options- A. The North Pole
- B. The South Pole
- C. The Equator
- D. The center of the Earth Discuss
- 8. What does airbag, used for safety of car driver, contain?
Options- A. Sodium bicarbonate
- B. Sodium azide
- C. Sodium nitrite
- D. Sodium peroxide Discuss
- 9. In fireworks, the green flame is produced because of
Options- A. Sodium
- B. Potassium
- C. Barium
- D. Mercury Discuss
- 10. Potassium Permanganate is used for purifying drinking water, because
Options- A. it is a sterilising agent
- B. it dissolves the impurities of water
- C. it is a reducing agent
- D. it is an oxidising agent Discuss
General Science problems
Search Results
Correct Answer: Infra-red waves
Correct Answer: Uttar Pradesh
Correct Answer: Mausoleum of Mohammed Adil Shah
Correct Answer: Odisha
Correct Answer: Guru Ram Das
Correct Answer: decreases slightly
Correct Answer: The center of the Earth
Explanation:
The weight of an object is minimum when it is placed at the center of the earth because when an object is in the center, it experiences gravitational pull from all directions.
Correct Answer: Sodium azide
Correct Answer: Barium
Correct Answer: it is an oxidising agent
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