KVPY SB/SX Mock...

The roots of (x - 41)⁴⁹ + (x - 49)41 + (x - 2009)²⁰⁰⁹ = 0 are

The number of isomers of Co(diethylene triamine)Cl₃ is

A concentrated solution of copper sulphate, which is dark blue in colour, is mixed at room temperature with a dilute solution of copper sulphate, which is light blue. For this process,

Among the following, the set of isoelectronic ions is

During photosynthesis, the chemical conversion of water is called

During development, unspecified cells become cells having unique functions. This process is called

Fertilisation in humans usually takes place in

One difference between blood and lymph is that blood

The disorders that arise when the immune system destroys self cells are called autoimmune disorders. Which of the following would be classified under this?

Transfer RNA (tRNA)

In mammals, the hormones secreted by the pituitary, the master gland, are regulated by

Vitamin A deficiency leads to night-blindness. Which of the following is the reason for the disease?

Ribonucleic Acids (RNA) that catalyse enzymatic reactions are called ribozymes. Which one of the following acts as a ribozyme?

Pathfinding by ants is by means of

Bacteriochlorophylls are photosynthetic pigments found in phototrophic bacteria. Their function is distinct from the plant chlorophyll in that they

If you dip a sack full of paddy seeds in water overnight and then keep it out for a couple of days, it feels warm. What generates this heat?

The major constituents of neurofilaments are

In which of the following phases of the cell cycle are sister chromatids available as template for repair?

Saline drip is given to a cholera patient because

Puffs in the polytene chromosomes of Drosophila melanogaster salivary glands represent

Human foetal haemoglobin differs from the adult haemoglobin in that it

Which of the following techniques is used for the detection of proteins?

Chlorofluorocarbons (CFCs) are believed to be associated with cancer because

Which of the following statements about nitrogenase is correct?

Let p(x) = a₀ + a₁x + . . . + anxⁿ. If p(-2) = -15, p(-1) = 1, p(0) = 7, p(1) = 9, p(2) = 13 and p(3) = 25, then the smallest possible value of n is

Suppose a, b, c are real numbers and each of the equations x² + 2ax + b² = 0 and x² + 2bx + c² = 0 has two distinct real roots. Then, the equation x² + 2cx + a² = 0 has

The mode of action of penicillin is as follows:

When hydrogen peroxide is applied on the wound as a disinfectant, there is frothing at the site of injury, which is due to the presence of an enzyme in the skin that uses hydrogen peroxide as a substrate to produce

Which one of the following is true about enzyme catalysis?

Which of the following statements is true about bacterial symbionts in insects?

Which of the following sequence of events gives rise to flaccid guard cells and stomatal closure at night?

Selection of lysine auxotroph from a mixed population of bacteria can be done by growing the bacterial population in the presence of

10⁹ bacteria were spread on an agar plate containing penicillin. After incubation overnight at 37⁰ > C, 10 bacterial colonies were observed on the plate. The colonies that are likely to be resistant to penicillin can be tested by