Vitamin C deficiency leads to:____________?
Vitamin C deficiency leads to:____________?
A. Scurvy
B. Cold
C. Cancer
D. Rickets
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Which 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 skyCarbon dioxide was discovered by_______?
Carbon dioxide was discovered by_______?A. Niels Bohr
B. Amedeo Avogadro
C. Joseph Black
D. None of AboveJoseph Black, a Scottish chemist and physician, first identified carbon dioxide in the 1750s. At room temperatures (20-25 oC), carbon dioxide is an odourless, colourless gas, which is faintly acidic and non-flammable. Carbon dioxide is a molecule with the molecular formula CO2.
Which of these is NOT an example of a renewable energy source?
Which of these is NOT an example of a renewable energy source?A. Wind energy
B. solar
C. Coal
D. Hydroelectric powerWhen white light is passed through a prism, it splits into __________ colours.
When white light is passed through a prism, it splits into __________ colours.A. 5
B. 6
C. 7
D. 8For water purification, we use?
For water purification, we use?A. Chlorine
B. Bromine
C. Plants
D. Young manHow many noses does an ant have?
How many noses does an ant have?A. One
B. Two
C. Three
D. None