Study the following letter-number arrangement and answer the question given below :
If the first half of the above arrangement is written in reverse order followed by the second half-written in reverse order, which letter/number will be eighteenth from left?
Refer to the given conversation among three friends.
Now, select the most suitable option regarding X, Y and Z.
AX can be cardboard.
BY can be plastic.
CZ can be steel.
DY can be cotton.
Ans 1: (Master Answer)
Sunita needs a waterproof container to carry water, so X cannot be a cardboard. Pihu needs a sheet to absorb oil, so Y cannot be plastic as it cannot absorb oil. Rahul needs a box made up of a material that is a bad conductor of heat, so it cannot be steel.
Y can be cotton as it will absorb the oil.
Which of the following adaptations are shown by given plant?
(i) Hollow stems and poorly developed roots.
(ii) Branches are cone-shaped and slanting.
(iii) Large and flat floating leaves with waxy upper surface.
(iv) Stem performs photosynthesis.
(v) Succulent and swollen stems to store water.
A(i) , (iv) and (v)
B(i) and (iii)
C(ii) , (iii) and (v)
D(i) , (iii) , (iv) and (v)
Four students were given small pieces of materials P, Q, R and S respectively. They observed the reactions of these materials as follows :
According to them, materials P, Q, R and S respectively are
AFe, Cu, Na, P
BNa, Fe, P, Cu
CP, Fe, Na, Cu
DCu, P, Na, Fe