Options:
- A. Optical fiber
- B. Transistor
- C. Decoder
- D. Photo diode
View Answer
D. Photo diode
Everyday Science
Animal which captures and readily kills living animals for its food is called___________?
Options:
- A. Parasite
- B. Scavenger
- C. Predator
- D. Mammal
View Answer
C. Predator
Twinkling of stars is caused by ?
Options:
- A. Reflection of light
- B. Polarization of light
- C. refraction of light
- D. Interference of light
View Answer
C. refraction of light
The main function of the kidney is ____________?
Options:
- A. To control blood pressure
- B. To control body temperature
- C. To remove waste product from the body
- D. To help in digestion of food
View Answer
C. To remove waste product from the body
Short-sightedness can be corrected by using ___________?
Options:
- A. Convex lens
- B. Concave lens
- C. Convex-concave lens
- D. Concave-convex lens
View Answer
B. Concave lens
The Green House Effect is caused by an excess of ?
Options:
- A. Carbon dioxide
- B. Carbon monoxide
- C. Carbon tetrachloride
- D. None of the above
View Answer
A. Carbon dioxide
For being able to see three-dimensional pictures we have to use_________?
Options:
- A. A binocular
- B. A camera
- C. An epidiascope
- D. A stereoscope
View Answer
D. A stereoscope
When white light is passed through a prism, it splits into __________ colours.
Options:
- A. 5
- B. 6
- C. 7
- D. 8
View Answer
C. 7
The planet which is easily visible from the Earth is?
Options:
- A. Mercury
- B. Venus
- C. Mars
- D. Jupiter
View Answer
B. Venus
Diamond is an allotropic form of_______?
Options:
- A. Carbon
- B. Hydrogen
- C. Nitrogen
- D. Silicon
View Answer
A. Carbon