What is the derivative of (sec²x)

What is the value of 2π in trigonometry?

Derivatives of 4x² is

A matrix can we add or subtracted if they have

If f(x) is an odd function, then f|x| would be

What is the minimum value for asecx + bcosx is

The most electronegative element among the following is

The metal used to recover copper from a solution of copper sulphate is

The heat required to raise the temperature of body by 1 K is called

The nuclear particles which are assumed to hold the nucleons together are

The most abundant rare gas in the atmosphere is

The octane number of zero is assigned to

The Latin word formica means ant. The name formic acid is derived from this Latin word because

The metal that is used as a catalyst in the hydrogenation of oils is

The nucleus of a hydrogen atom consists of

The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called

Probability lies b/w