Science & Mathematics Topics
School level (Class 6–12) — Science & Mathematics
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Physics
Chemistry
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Biology Option
Full Syllabus Mock Topics
quiz Questions
Q11
Chemical formula of common salt is
NaCl
Joule
Newton
Watt
Explanation
Table salt is sodium chloride.
Q12
Chemical formula of water is
Newton
H2O
Watt
Joule
Explanation
Water molecule has two hydrogen and one oxygen atom.
Q13
The gas essential for photosynthesis is
Watt
Joule
Newton
Carbon dioxide
Explanation
Plants use CO2 in photosynthesis.
Q14
Green pigment in plants is
Chlorophyll
Joule
Watt
Newton
Explanation
Chlorophyll absorbs light energy for photosynthesis.
Q15
The powerhouse of the cell is
Newton
Joule
Mitochondria
Watt
Explanation
Mitochondria produce ATP for cellular energy.
Q16
The basic unit of life is
Cell
Newton
Joule
Watt
Explanation
Cell is structural and functional unit of life.
Q17
Human blood group discovered by Karl Landsteiner is system
Joule
ABO
Watt
Newton
Explanation
Landsteiner identified ABO blood groups.
Q18
Normal human body temperature is approximately
37 degree Celsius
Watt
Joule
Newton
Explanation
Average normal body temperature is around 37C.
Q19
Vitamin C deficiency causes
Joule
Scurvy
Watt
Newton
Explanation
Scurvy results from prolonged vitamin C deficiency.
Q20
Vitamin D deficiency causes
Rickets
Newton
Joule
Watt
Explanation
Rickets is linked to low vitamin D and calcium metabolism.