Read the given statement regarding soil X and select the correct statement regarding it.
Soil X is sticky, it can hold a lot of water and there is very little space for air between the particles.
AMost plants grow well in it.
BIt is used to make toys, flower pots, idols, etc.
CIt is a mixture of sand and clay.
DIt is mostly found on the seashore and in the desert.
Sugar can be separated from its solution because
A Mixing of sugar in water is a permanent change
B Mixing of sugar in water is an exothermic process
C Mixing of sugar in water is a change that can be reversed by evaporation
D Mixing of sugar in water is a change that can be reversed by filtration.
Observe the given figure carefully and select the correct statement.
AProcesses P and R are exothermic.
BProcesses S and R are exothermic.
CProcesses S and R are endothermic.
DProcesses P and Q are endothermic.
Study the diagram shown below which shows X, Y and Z as three states of water.
Which arrows, K, L, M or N, represent the processes of freezing and boiling?
WHY THIS QUESTION ANSWERS C
Earthquakes at two places A and B were measured by a seismograph which recorded the magnitude as 2 and 4. The magnitude of tremors and the destructive energy at A and B can be compared as
A Tremors at B are two times those at place A
B Tremors at B are four times those at place A
C Tremors at B are 100 times those at place A
D Tremors at B are 1000 times those at place A.
pls tell how to calculate
Kepler's third law states that square of period of
revolution (T) of a planet around the sun is proportional
to third power of average distance r between the sun
and the planet i.e. T2 = Kr3 (here K is constant). If the
masses of sun and planet are M and m respectively then
as per Newton's law of gravitation, force of attraction
between them is F = GMm/r2, here G is gravitational
The relation between G and K is described as
A K = G
B K = 1/G
C GK = 4π2
D GMK = 4π2
Direction : Refer to the given dichotomous key regarding cell organelles and answer the questions 49 and 50.
AP can be ER and Q can be Golgi apparatus.
BR can be chloroplasts and S can be ribosomes.
CP can be nucleus and T can be ribosomes.
DR can be mitochondria and S can be lysosomes.
The above question has 2 correct answers C and D.