MCQ
The substance that will be flattened on beating with a hammer is:
- ACrystal of iodine.
- BLump of sulphur.
- CPiece of coal.
- ✓Zinc granule.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
|
|
Manures
|
Fertilisers
|
|
$(i)$
|
They are not soluble in water. So they are not easily absorbed by the roots of the plants.
|
They are soluble in water and are absorbed by the plants easily.
|
|
$(ii)$
|
These are inorganic substances.
|
These are organic substances.
|
|
$(iii)$
|
Excessive use does not harm the soil texture, they provide humus to the soil.
|
Excessive use can change the chemical composition of the soil and also pollutes water.
|
|
$(iv)$
|
They restore the soil texture and help in water retention.
|
They may damage the soil texture.
|
|
$(v)$
|
These are nutrient specific.
|
These are not nutrient specific.
|