Question
Which of the following metals does not liberate hydrogen
gas when reacted with cold water but does so with steam?Solution
Magnesium reacts very slowly with cold water, and the reaction may not be observable at room temperature. However, when heated with steam, magnesium reacts more vigorously, forming magnesium oxide (MgO) and hydrogen gas (H ₂ ). Reaction with steam: Mg (s) + H ₂ O (g) → MgO (s) + H ₂  (g)
Girdling in _________ is done to increase the berry size
The important biological control insect for Parthenium hysterophorus in India is
The most reactive among the halogens is-
Opaque 2 is associated with
FRI ( forest research institute ) was established is located at
Sunhemp should be planted at what distance (in cm) to raise fibre crop?
The  agriculture sector, which is the largest employer of workforce, accounted for a sizeable 18.8 per cent (2021-22) in�...
The photorespiration process takes place in which of the following organelles?
Given below are two statements:
Statement I:
Ammonium sulphate can supply nitrogen, calcium and sulphur to crops
Statement II: <...
Berseem is inoculated with which of the following?
