Refer to the given figure.
At which labelled stage moulting occurs?
A P only
B Q only
C P and R only
D R and S only
in the given figure life cycle of moth is given p , q , r and s which represents eggs , larva , cocoon , moth respectively . moulting occurs in larva stage
The given diagram shows three
gears arranged to work in a
mechanical system. If gear
Q moves in an anticlockwise
direction, in which direction
would gears P and R move?
The diagram shows two identical set-ups each consisting of a container filled with water, an electric heater and a thermometer. Only the positions of the electric heater
and the thermometer differ in both set-ups.
Which of the following graphs
represents the approximate
variations of the readings of
the thermometers, X and Y
options are wrong.B and D are same.A and C are also same
Lightning is a stream of flowing electrons. It occurs when
(i) Charges accumulated on the cloud discharges through it.
(ii) A huge mass of charged layer of cloud discharges with the Earth.
A Only (i) is correct.
B Only (ii) is correct.
C Both (i) and (ii) are correct.
D Neither (i) nor (ii) is correct.
Raju, a farmer got his field checked for soil toxicity.
The report showed high level of toxic chemicals in
his field. How can these toxic chemicals in the soil
AThey may enter any nearby waterbody due to runoff and cause algal bloom.
BThey are absorbed by food plants growing in the soil making them unfit for consumption.
CThey may get evaporated in the air causing air pollution.
DBoth A and B
Answer is B not D
Ans 1: (Master Answer)
If these toxic chemicals enter the nearby waterbodies, they cause the microalgae population in the water-body to grow uncontrollably, causing algal bloom. These algae lower the oxygen levels in the water and cause harm to aquatic life. Toxic chemicals mixed with soil and water are absorbed by food plants and they become unfit for consumption. Toxic chemicals in the soil will cause soil pollution and water pollution. They will not cause air pollution.
Which of the following is a way to help control environmental pollution?
ATravelling by car instead of bicycle.
BUse of pesticides to keep insects away from plants.
CBurning waste materials at dump sites.
DReuse of cans, bottles and newspapers whenever possible.
The given figure shows some of the stages in the agricultural practice. Arrange them in the correct sequence of order and select the correct option.
A d → c → e → a → b
B c → e → b → d → a
C a → b → e → d → c
D d → b → e → a → c