List of practice Questions

Who proved that DNA is basic genetic material?
Which of the following fertilizers has the highest nitrogen percentage ?
When $CuSO_4 $ is electrolysed using platinum electrodes?
What is formed when a primary alcohol undergoes catalytic dehydrogenation?
Ultraviolet radiations from sunlight causes a reaction that produces
Initiation codon of protein synthesis (in eukaryotes) is
In the fluorite structure, the coordination number of $ Ca^{2+}$ ion is
In plant cells, peroxisomes are associated with
In salivary gland chromosomes/polytene chromosomes, pairing is
Hair present in the skin are
Formation of cartilage bones involves
Which one of the following has the smallest heat of hydrogenation per mole ?
The material used in solar cells contains
Let E and F be two independent events. If the probability that both E and F happen is 1/12 and the probability that neither E nor F happen is 1/2. Then,
Equal weights of ethane and hydrogen are mixed in an empty container at $25^\circ$ C. The fraction of the total pressure exerted by hydrogen is
The locus of the centre of a circle, which touches externally the circle $x^2 + y^2 -6 x - 6y + 14 = 0$ and also touches the Y-axis, is given by the equation
An unbiased die with faces marked $1, 2, 3, 4, 5$ and $6$ is rolled four times. Out of four face values obtained, the probability that the minimum face value is not less than 2 and the maximum face value is not greater than 5, is
An ideal gas is taken from the state A (pressure p, volume V) to the state B (pressure p /2, volume 2 V) along a straight line path in the p-V diagram. Select the correct statements from the following
Two blocks A and B each of mass m, are connected by a massless spring of natural length Land spring constant k. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown in figure. A third identical block C, also of mass m, moves on the floor with a speed v along the line joining A and B, and collides elastically with A. Then
The unit of electrical power is
Wave has simple harmonic motion whose period is 4 seconds while another wave which also possesses simple harmonic motion has its period 3 sec. If both are combined, then the resultant wave will have the period equal to
A monkey is decending from the branch of a tree with constant acceleration. If the breaking strength is 75% of the weight of the monkey, the minimum acceleration with which monkey can slide down without branch is
Solar energy is due to
A plant having seeds but lacking flowers and fruits belongs to
A plant in which sporophytic generation is represented by zygote is