An equation for photosynthesis is written below.Select the correct statements regarding X, Y and Z.
I. X is the gas which constitutes 21% of air in the atmosphere.
II. Y represents the pigment present in green leaves of the plant.
III. Z is the gas which turns lime water milky.
IV. X is the gas which extinguishes fire.
A I and II
B II and IV
C I, II and III
D I, II, III and IV
II and IV
As per the equation of photosynthesis -X is carbon dioxide, Y is chlorophyll and Z is oxygen.
I is incorrect because carbon dioxide constitutes only 0.04% of atmosphere and III is incorrect because oxygen gas does not turn lime water milky.
If these four identical balls are dropped at the same time and from the same height, which ball will land first?
why d is answer ?
Refer the given conversation about simple machines.
Identify the INCORRECT option regarding P, Q and R.
AQ can be used to hold things.
BP can be axe or knife.
CR can be a ramp in hospitals.
DQ helps to move heavy objects.
can i have the answer of this one also
Given figure shows land breeze that blows at night.
Which of the following is INCORRECT regarding this?
ALand has higher air pressure than the sea.
BAir blows from high pressure area to low pressure area.
CHot air above sea rises into atmosphere.
DAs Sun sets, sea cools faster than land.
can i please have the answer of this above question
Pointing to a photograph, a man said to a woman,
"She is one of the sisters of the son of the only son
of your grandfather." If the woman in the photograph
is the sister of the son of the man's father-in-law, then
how is the man related to the woman (with whom the
man was talking)?
D Either a or c
It should be husband
It is the hardest substance of our body. It is X.
It is soft and bears blood vessels and nerves. It is Y.
Which is true about X and Y?
AX is pulp and Y is dentine
BX is enamel and Y is pulp
CX is enamel and Y is dentine
DX is pulp and Y is enamel
check diagram pulp contains nerves and blood vesselsor in wikipedia or encyclopedia