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- Question
Formation of shadows can be explained by
Options- A. rectilinear propagation of light
- B. reflection
- C. refraction
- D. total internal reflection
- Correct Answer
- rectilinear propagation of light
ExplanationIn this position, the head light will be at the principal focus so that the rays of light falling on the cancave mirror will be rendered parallel
- 1. Who invented Bicycle?
Options- A. Leo H Baekeland
- B. Karl Benz
- C. Evangelista Torricelli
- D. Kirkpatrick Macmillan Discuss
- 2. The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is
Options- A. helium
- B. ozone
- C. oxygen
- D. methane Discuss
- 3. Which state Government of India has instituted the Samman Award?
Options- A. Uttar Pradesh
- B. Himachal Pradesh
- C. Madhya Pradesh
- D. Andhra Pradesh Discuss
- 4. Natural radioactivity was discovered by
Options- A. Marie Curie
- B. Ernest Rutherfor
- C. Henri Becquerel
- D. Enrico Fermi Discuss
- 5. Plants growing on sand are called as
Options- A. chasmophytes
- B. oxylophytes
- C. lithophytes
- D. psammophytes Discuss
- 6. What is a NIC?
Options- A. Netware Intranet Controller
- B. No Internet Connection
- C. Network Interface Card
- D. Network Interference Control Discuss
- 7. In which of the following industries is mica as a raw material?
Options- A. Cement
- B. Glass and Pottery
- C. Iron and Steel
- D. Electrical Discuss
- 8. This English inventor is known as the 'Father of Computing.'
Options- A. Philo Farnsworth
- B. J. Presper Eckert
- C. John Mauchly
- D. Charles Babbage Discuss
- 9. The mass number of an atom is equal to
Options- A. the number of protons
- B. the number of protons and electrons
- C. the number of nucleons
- D. the number of neutrons Discuss
- 10. The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
Options- A. an addition reaction
- B. a condensation reaction
- C. an oxidation reaction
- D. an elimination reaction Discuss
More questions
Correct Answer: Kirkpatrick Macmillan
Correct Answer: ozone
Correct Answer: Madhya Pradesh
Correct Answer: Henri Becquerel
Correct Answer: psammophytes
Correct Answer: Network Interface Card
Explanation:
A NIC is a Network Interface Card. Usually a card that is plugged into a computer's expansion slot.
Correct Answer: Electrical
Correct Answer: Charles Babbage
Explanation:
Mauchly and Eckert invented the ENIAC computer. Farnsworth was a pioneer of early television.
Correct Answer: the number of nucleons
Correct Answer: a condensation reaction
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