List of practice Questions

A compound microscope has its objective with linear magnification of 10. In order to achieve a final magnification of 100, the angular magnification of the eyepiece should be ..........
The generation time of E. coli is 20 minutes. If there are \( 10^6 \) E. coli present in an exponentially growing synchronous culture, then the average time (in minutes) required to obtain a final population of \( 4 \times 10^6 \) E. coli is ................
DNA and RNA are acidic in nature due to the presence of
In a typical mammalian cell, the protein content is 20 % of its net weight. If the density and volume of the cell are 1.2 g/mL and 4 × 10\(^{-9}\) mL, respectively, then the concentration (in mg/mL) of the protein is
Consider a spherical particle of mass \( m \) and radius \( r \) moving in a medium. Its velocity at any time is given by \( v = v_0 \exp\left( -\frac{6 \pi X r t}{m} \right) \), where \( v_0 \) is the initial velocity of the particle. The dimensions of \( X \) are
The common component in crustacean exoskeleton and fungal cell wall is
During El Niño,
Eutrophication refers to an aging process from a
T cells and B cells are
In humans, the testis temperature is maintained below the core body temperature with the help of
Protein that helps other proteins to fold correctly is
The CORRECT sequence of phases during mitosis is
In viruses, capsids are made up of
Deficiency of the enzyme phenylalanine hydroxylase causes Phenylketonuria. Phenylalanine hydroxylase converts phenylalanine to
A train travels the first 160 km at 64 km/hr and the next 160 km at 80 km/hr. What is the average speed of the train?
Let the m-th and n-th terms of a geometric progression be \(\frac{3}{4}\) and \(12\) , respectively, where m<n. If the common ratio of the progression is an integer r, then the smallest possible value of r + n - m is
Find out the missing number in the following number series.
483, 500, 581, 711, 877, ?
What will be the missing term in the series: 11, 88, ..., 6336, 57024, 456192?
The area of triangle is half the area of a square. The perimeter of the square is 224cms. What is the area of the triangle?
If \(\frac {(2 sin\ θ – cos\ θ)}{(cos\ θ + sin\ θ)} = 1\), then the value of \(cot\ θ \) is
What is the value of \( \sin 45^\circ + \tan 45^\circ \)?
What is the value of \( \frac{\sin 42^\circ}{\cos 48^\circ} \)?
A sum was put at simple interest at a certain rate for 3 years. Had it been put at 1% higher rate, it would have fetched ₹5,100 more. The sum is _______.
Shiva invested a certain sum of money in a simple interest bond whose value grew to ₹300 at the end of 3 years and to ₹400 at the end of another 5 years. What was the rate of interest at which he invested his sum?
A sum of INR 15000 is put on compound interest. This sum becomes 2 times in 5 years at this rate. What would the original sum become after 20 years?