List of practice Questions

The displacement x of a particle varies with time t as \(x=ae^{-  \alpha t} + be ^{\beta t}\), where \(a,b,\) \(\alpha\) and \(\beta\) are positive constants. The velocity of the particle will:

The chirality of the compound

In a circuit, L,C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45°.The value of C is:
Which of the following substances, if introduce in the blood stream, would cause coagulation, at the site of its introduction ?
Biodiversity Act of India was passed by the Parliament in the year
One of the most important functions of botanical gardens is that
According to IUCN Red list, what is the status of Red Panda (Ailurus fulgens) ?
Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:
Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because :
Why is vivipary an undesirable character for annual crop plants?
All of the following statements concerning the actinomycetes filamentous soil bacterium Frankia are correct except that Frankia :
The best method for the separation of naphthalene and benzoic acid from their mixture is
As a result of change in the magnetic flux linked to the closed loop as shown in the figure, an e.m.f. V volt is induced in the loop. The work done (joule) in taking a charge Q coulomb once along the loop is
In a type of apomixis known as adventive embryony, embryos develop directly from the
Through which cell of the embryo sac, does the pollen tube enter the embryo sac ?
Photosynthetic Active Radiation (PAR) has the following range of wavelengths
A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distances of 2 m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is
Haemophilia is more commonly seen in human males than in human females because
De Vries gave his mutation theory on organic evolution while working on
A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of:
The simple pendulum acts as second's pendulum on earth. Its time on a planet, whose mass and diameter are twice that of earth is

As compared to a C3 plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4 plants :

The world's highly prized wool yielding 'Pashmina' breed is
At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation ?
Match items in column-I with those in column-II.
 Column-I Column-II
APeritrichous flagellation1Ginkgo
BLiving fossil2Macrocystes
CRhizophore3Escherichia coli
DSmallest flowering plant4Selaginella
ELargest perennial alga5Wolffia

Select the correct answer from the following : Codes :