List of practice Questions

Focal length, radius of curvature and power of a plane mirror respectively are

How many electrons are involved during the oxidation reaction of $ KMnO_4 $ in acidic medium ?

A force of 10 N acts on a body of mass 0.5 kg for 0.25 second starting from rest. What is its momentum now?

An athlete runs exactly once around a circular track of length $ 500\,m $ . The runners displacement in the race is

Magnetic energy density in an inductor is given by

The intrinsic carrier concentration of silicon sample at $ 300\, K $ is $ 1.5 \times 10^{16}\, m^{-3} $ . What is the density of minority carrier ? (after doping, the number of majority carriers is $ 5 \times 10^{20}\, m^{-3} $ )

In case of a simple harmonic motion, if the velocity is plotted along the $X$ -axis and the displacement (from the equilibrium position) is plotted along the $Y$ -axis, the resultant curve happens to be an ellipse with the ratio: $\frac{\text { major axis (along } X \text { ) }}{\text { minor axis (along } Y)}=20 \pi$ What is the frequency of the simple harmonic motion?

Which of the following compounds are aromatic?

The adsorption of water by hydrophilic compounds like cellulose and pectin in root hair cell wall is called _______.

Which of the following does not show a resonance effect

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :

1. \(60ml\frac{M}{10}HCL+40ml\frac{M}{10}NaOH\)
2. \(55ml\frac{M}{10}HCL+45ml\frac{M}{10}NaOH\)
3. \(75ml\frac{M}{5}HCL+25ml\frac{M}{5}NaOH\)
4. \(100ml\frac{M}{10}HCL+100ml\frac{M}{10}NaOH\)

pH of which one of them will be equal to 1 ?

Let $f (x) = px^2 + qx + r$ , where $p, q, r$ are constants and $p \neq 0$ . If $f (5) = -3 f (2)$ and $f (-4) = 0$ , then the other root of $f$ is

Everybody in a room shakes hands with everybody else. The total number of handshakes is 45. The total number of persons in the room is

If A and B are mutually exclusive events , given that $P(A) = \frac{3}{5} , P(B) = \frac{1}{5}$, then P(A or B) is

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Fibrinogen	i.	Osmotic balance
b.	Globulin	ii.	Blood clotting
c.	Albumin	iii.	Defence mechanism

Which of the following is an occupational respiratory disorder ?

Calcium is important in skeletal muscle contraction because it

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.

Ciliates differ from all other protozoans in

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

According to Hugo de Vries, the mechanism of evolution is

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Proliferative Phase	i.	Breakdown of endometrial lining
b.	Secretory Phase	ii	Follicular Phase
c.	Menstruation	iii.	Luteal Phase

All of the following are part of an operon except

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by