Questions

Which of the following technique is used to know the age of a tree in years?

The centre of the reflecting surface of a spherical mirror is called the

Which of the following has the same unit as energy?

Because of base pairing in DNA, the percentage of

Syngamy is defined as

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.
P- They never desert us even when all fair weather friends have deserted us.
Q- Books are never failing friends.
R- They dispel the dark clouds of gloom from our minds and increase our happiness if we are already happy.
S- Through the ages, the scriptures and other great books have provided, immeasurable solace to the wounded and strife torn humanity.

If a solution turns blue litmus red, its pH is likely to be

Ice floats on water because its density is