The diagram above is a crop pest. A cultural method used in controlling the pest illustrated is
Spraying with insecticides
Hand-pulling of weeds
Fumigation of store
Early planting
Correct answer is A
No explanation has been provided for this answer.
Which of the following compounds is a basic salt?
Mg(NO3)2
(NH4)2SO4
K4Fe(CN)6
Zn(OH)CI
Correct answer is D
No explanation has been provided for this answer.
an acidic oxide
an oxidizing agent
a basic oxide
a dehydrating agent
Correct answer is A
No explanation has been provided for this answer.
The diagram above illustrates a crop pest. What kind of pest is this?
A boring insect pest
A chewing insect pest
A sucking insect pest
A piercing insect pest
Correct answer is B
No explanation has been provided for this answer.
I only
lll only
l and lll only
ll and lll only
Correct answer is C
KNO\(_3\) and NH\(_4\)Cl both undergo endothermic.
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