[B] It reacts with cold water to form magnesium oxide and evolves hydrogen gas. Magnesium metal never reacts with cold water but reacts with both hot water and steam to form magnesium hydroxide and hydrogen gas. Mg(s) + H₂O(l) → Mg(OH)₂ + H₂(g) ↑
[B] It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
Magnesium metal never reacts with cold water but reacts with both hot water and steam to form magnesium hydroxide and hydrogen gas.
Mg(s) + H₂O(l) → Mg(OH)₂ + H₂(g) ↑
Some possible explanations are that the alien species may be i. Vigorously growing and compete with the natural plants for minerals, water etc. The less vigorous local species may be eliminated. ii. Natural pests and predators of the alien species may not be present in the introduced area-leading toRead more
Some possible explanations are that the alien species may be
i. Vigorously growing and compete with the natural plants for minerals, water etc. The less vigorous local species may be eliminated.
ii. Natural pests and predators of the alien species may not be present in the introduced area-leading to proliferation in their number.
iii. The introduced species may harm the local species by production of chemicals (Amensalism)
iv. The alien species by proliferation may make conditions unfavourable for the growth of local native plants. (eg. Eichornia).
Which among the following statements is incorrect for magnesium metal ?
[B] It reacts with cold water to form magnesium oxide and evolves hydrogen gas. Magnesium metal never reacts with cold water but reacts with both hot water and steam to form magnesium hydroxide and hydrogen gas. Mg(s) + H₂O(l) → Mg(OH)₂ + H₂(g) ↑
[B] It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
See lessMagnesium metal never reacts with cold water but reacts with both hot water and steam to form magnesium hydroxide and hydrogen gas.
Mg(s) + H₂O(l) → Mg(OH)₂ + H₂(g) ↑
What is the SI unit of momentum?
[C] kg-ms-1
[C] kg-ms-1
See lessWhen a rubber Balloon held between the hands is pressed, its shape changes. This happens because:
[A] balanced forces act on the balloon
[A] balanced forces act on the balloon
See lessThe rigid outer covering in plant cell is called cell membrane.
[B] False
[B] False
See lessElaborate how invasion by an alien species reduces the species diversity of an area.
Some possible explanations are that the alien species may be i. Vigorously growing and compete with the natural plants for minerals, water etc. The less vigorous local species may be eliminated. ii. Natural pests and predators of the alien species may not be present in the introduced area-leading toRead more
Some possible explanations are that the alien species may be
See lessi. Vigorously growing and compete with the natural plants for minerals, water etc. The less vigorous local species may be eliminated.
ii. Natural pests and predators of the alien species may not be present in the introduced area-leading to proliferation in their number.
iii. The introduced species may harm the local species by production of chemicals (Amensalism)
iv. The alien species by proliferation may make conditions unfavourable for the growth of local native plants. (eg. Eichornia).