List of practice Questions

Which of the following is specifically used in genetic engineering?
Lac producing insect is
All chordates at one or the other stage possess
Echinodermata is a group of animals which are
Streptomycin is produced by
Entamoeba histolytica differs from Amoeba proteus in not having
Branch of botany which deals with the internal organisation of plants is
Stroma is the ground substance of
In a plant cell vacuole contains
At what depth below the surface of the earth, acceleration due to gravity $g$ will be half its value $1600\,km $ above the surface of the earth?
The $pK_a$ of acetic acid is lower than that of phenol. Phenoxide ion is more resonance stabilised.
The driver in a vehicle moving with a constant speed on a straight road is in a non-inertial frame of reference. A reference frame in which Newton?? laws of motion are applicable is non-inertial.
Smaller drops of liquid resist deforming forces better than the larger drops. Excess pressure inside a drop is directly proportional to its surface area.
In $He-Ne$ laser, population inversion takes place between energy levels of neon atoms. Helium atoms have a meta - stable energy level.
$HClO_4$ is a stronger acid than $HClO_3$. Oxidation state of chlorine in $HClO_4$ is $+7$ and in $HClO_3$ is $+5$.
Deficiency of sulphur causes chlorosis in plants. Sulphur is a constituent of chlorophyll, proteins and nucleic acids.
The great barrier reef along the east coast of Australia can be categorised as
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with
Given below is a pedigree chart of a family with five children. It shows the inheritance of attached ear lobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals. Which one of the following conclusions drawn is correct ?
From evolutionary point of view, human gestation period is believed to be shortening. One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.
Aqueous gold colloidal solution is red in colour. The colour arises due to scattering of light by colloidal gold particles.
All $F - S - F$ angle in $SF_4$ is greater than $90^{\circ}$ but less than $180^{\circ}$. The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.
Which of the following is a biodegradable polymer?
An organ pipe closed at one end has fundamental frequency of $1500\, Hz$. The maximum number of overtones generated by this pipe which a normal person can hear is
Which of the following does not have optical isomer?