List of practice Questions

What is the maximum number of hydrogen bonds that a water molecule can make in the liquid state?
How many pairs of autosomal chromosomes are there in normal humans?
Calculate the temperature (in K) at which the resistance of a metal becomes 20% more than its resistance at 300 K. The value of the temperature coefficient of resistance for this metal is \(2.0 \times  10^{-4}\)/K.
In the 1'H NMR spectrum of ethanol at 400 MHz, the methyl group splits into ___number of peaks.
In a denaturing polyacrylamide gel electrophoresis experiment, pure intact adult human hemoglobin will yield (number) bands.
A man throws a ball vertically up in the air with an initial velocity v1 such that it reaches a height of 12 m with a speed of 12 m/s. If he throws the same ball vertically up with an initial velocity v such that it reaches a maximum height of 12 m. Calculate v1/v2 (up to 2 decimal places).
What is the acceleration due to gravity (m/s²) on the surface of a planet if its radius is 1/4th that of earth and its mass is 1/80th that of earth" Assume that the gravity on the surface of the earth is 10 m/s².
In a randomly mating population, the frequency of 'A' allele is 0.7. What is the frequency of An" genotype in the next generation according to Hardy- Weinberg's law? (up to two decimal places)
The potential difference to accelerate an electron was quadrupled. By what factor does the de Broglie wavelength of the electron beam change?
Assuming the molecule shown below is aromatic, the value of "s" according to "Hückel's rule" is
an aromatic molecule
A double stranded DNA molecule of total 5000 base pairs long, has a melting temperature of 85 °C. What will be the % AT base pairs in this sample? (up to one decimal place).
How many GTP molecules are required for the translocation of tRNA from P site to E site during translation elongation process in bacteria?
Amongst the molecules given below, the total number of molecules that have at least one sp² hybridized atom is___.
\(C_6H_6, NO_2, BF_3, H_2O_2,SO_2,C_2H_2, L\) -Tryptophan
Which of the following is involved in innate immune response in higher mammals?
Which among the following belongs to the family "Retroviridac"?
Which of the following is a glycolipid?
Which of the following bacterial component contains "dipicolinic acid"?
The fossilization process in which mineral rich water penetrates through the pores of decomposed organic matter is known as___.
A random fluctuation in gene frequency is called
The number of "Barr Bodies" present in a somatic cell of a woman suffering from Turner syndrome is___.
Which of the following are produced by Mangrove trees to survive in the waterlogged swampy forests?
Indeterminate growth in plants is due to the presence of perpetually undifferentiated tissues, called as____
The osmotic potential (Ψ) of pure water is___ MPa.
Bacteria containing a tuft of flagella that comes out from one pole is called___.
Which of the following activity is associated with Klenow fragment?