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11/08/2026

Which chemical is bleaching powder?
A. Ca(OCl)₂
B. NaCl
C. H₂SO₄
D. NaOH

11/08/2026

Which animal class does whale belong to?
A. Mammalia
B. Fish
C. Amphibia
D. Aves

10/08/2026

Which element has atomic number 19?
A. Magnesium
B. Sodium
C. Potassium
D. Calcium

10/08/2026

The unit of electric power is:
A. Watt
B. Volt
C. Ohm
D. Joule

10/08/2026

Which element is represented by Ar?
A. Silver
B. Gold
C. Argon
D. Aluminum

10/08/2026

Which organelle makes proteins?
A. Ribosome
B. Nucleus
C. Vacuole
D. Lysosome

08/08/2026

Heat transfer in fluids occurs by:
A. Conduction
B. Convection
C. Radiation
D. Reflection

08/08/2026

Which vitamin helps vision?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin K

08/08/2026

Which element is used in nuclear reactors?
A. Uranium
B. Sodium
C. Silicon
D. Calcium

07/08/2026

Which organ detoxifies harmful substances?
A. Liver
B. Kidney
C. Heart
D. Lung

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