List of practice Questions

Passage cells are thin - walled cells found in

Styrene can be purified by

Ovarian hormones are usually

Open type of vascular system is predominant in

One of the following has a biradial symmetry

One mole of an ideal gas at an initial temperature of $T \,K$ does $6R$ joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is $5/3$, the final temperature of gas will be

On introducing a thin film in the path of one of the two interfering beams, the central fringe will shift by one fringe width. If $ \mu =1.5, $ the thickness of the film is (wavelength of monochromatic light is $ \lambda $ )

Internal energy is sum of

Nucellus forms which of the following part of fruit?

Nitrifying bacteria

Natural rubber is a polymer of

NaOH is

$\Psi^{2}=0$ represent

Sodium hypohalite when dissolved in water will turn

$A$ when added to silica will give $B A$ and $B$ are

The compound

The number of geometrical isomers in $CH _{3} CH = CHCH _{2} CH = CH _{2}$ are

$n$-Pentane and $iso$-pentane are the examples of which isomerism?

Cyano benzene has

The angular momentum of the electron in first excited energy state of hydrogen atom is

Moment of inertia of ring about its diameter is $ I. $ Then, moment of inertia about an axis passing through centre perpendicular to its plane is

Mode of feeding in free living protozoan is

Mesogamy is

Melanocyte Stimulating Hormone (MSH) is produced by

Mass spectrometric analysis of potassium and argon atoms in a Moon rock sample shows that the ratio of the number of (stable) ${ }^{40} Ar$ atoms present to the number of (radioactive) ${ }^{40} K$ atoms is $10.3$. Assume that all the argon atoms were produced by the decay of potassium atoms, with a half-life of $1.25 \times 10^{9} yr$. How old is the rock?