[D] (iii) and (iv) Calcium reacts slowly with water. The reaction forms calcium hydroxide and hydrogen gas. The calcium metal sink in water and after hour bubbles of hydrogen are observed, stuck to the surface of the metal. Hence your answer will be option [D].
[D] (iii) and (iv)
Calcium reacts slowly with water. The reaction forms calcium hydroxide and hydrogen gas. The calcium metal sink in water and after hour bubbles of hydrogen are observed, stuck to the surface of the metal. Hence your answer will be option [D].
The observations can be explained by the phenomenon of:
[A] Scattering of light
[A] Scattering of light
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[D] (iii) and (iv) Calcium reacts slowly with water. The reaction forms calcium hydroxide and hydrogen gas. The calcium metal sink in water and after hour bubbles of hydrogen are observed, stuck to the surface of the metal. Hence your answer will be option [D].
[D] (iii) and (iv)
See lessCalcium reacts slowly with water. The reaction forms calcium hydroxide and hydrogen gas. The calcium metal sink in water and after hour bubbles of hydrogen are observed, stuck to the surface of the metal. Hence your answer will be option [D].
Select the incorrect statement about the covid-19 disease:
[D] it can be cured by taking antibiotics
[D] it can be cured by taking antibiotics
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[C] Sulphur particles start precipitating in about 2 and 3 minutes
[C] Sulphur particles start precipitating in about 2 and 3 minutes
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Natural or human induced disturbances like fire, deforestation etc.
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