[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 natural resources which got drained by human consumption are called exhaustible natural resources. e.g. coal, petroleum, natural gas, minerals etc.
The natural resources which got drained by human consumption are called exhaustible natural resources. e.g. coal, petroleum, natural gas, minerals etc.
The natural resources which are continuously available and are not likely to be exhausted are called inexhaustible natural resources. e.g. air, sunlight.
The natural resources which are continuously available and are not likely to be exhausted are called inexhaustible natural resources. e.g. air, sunlight.
What happens when calcium is treated with water?
[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].
How can we purify the blood by artificial methods?
[B] Dialysis
[B] Dialysis
See lessWhich one of the following is not a fungal disease?
c. Black rot of crucifers
c. Black rot of crucifers
See lessMore than 70 per cent of livestock population is in:
d. India and China
d. India and China
See less33 percent of India’s (Gross Domestic Product) comes from
b. Agriculture
b. Agriculture
See lessProtoplast is:
c. a plant cell without a cell wall
c. a plant cell without a cell wall
See lessWrite some uses of coal tar.
It is used to manufacture dyes, drugs, explosives, perfumes, plastics, paints etc.
It is used to manufacture dyes, drugs, explosives, perfumes, plastics, paints etc.
See lessExpand CNG.
Compressed Natural Gas.
Compressed Natural Gas.
See lessWhat are exhaustible natural resources? Give examples.
The natural resources which got drained by human consumption are called exhaustible natural resources. e.g. coal, petroleum, natural gas, minerals etc.
The natural resources which got drained by human consumption are called exhaustible natural resources. e.g. coal, petroleum, natural gas, minerals etc.
See lessWhat are inexhaustible natural resources? Give examples.
The natural resources which are continuously available and are not likely to be exhausted are called inexhaustible natural resources. e.g. air, sunlight.
The natural resources which are continuously available and are not likely to be exhausted are called inexhaustible natural resources. e.g. air, sunlight.
See less