The gas usually filled in the electric bulb is___________?
The gas usually filled in the electric bulb is___________?
A. Nitrogen
B. Hydrogen
C. Carbon dioxide
D. Oxygen
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Approximate age of moon is _________?
Approximate age of moon is _________?
A. 4.51 billion years
B. 4.55 billion years
C. 4.53 billion years
D. 4.57 billion yearsThe _____ is the largest natural source of light?
The _____ is the largest natural source of light?A. Sun
B. Moon
C. Star
D. None of theseWhich of the following statements is true when we see ‘rainbow’ ?
Which of the following statements is true when we see ‘rainbow’ ?A. We face sun and raindrops
B. The Sun remains behind us and we face raindrops
C. In light rainfall, we face Sun
D. The sky remains clear and the sun is at lower position in the skyWhich one of the following is not vector quantity _______?
Which one of the following is not vector quantity _______?A. Acceleration
B. Displacement
C. Speed
D. ForceHow many number of milk teeth are in the human body?
How many number of milk teeth are in the human body?A. 16
B. 12
C. 22
D. 20How many planets in Solor Syestem?
How many planets in Solor Syestem?A. 4
B. 5
C. 6
D. 8