List of practice Questions

The angle between a tangent to a circle and the radius drawn at the point of contact is
If the ratio of base radii of right circular cylinder and cone is 2 : 3 and the ratio of their heights is 3: 4, then the ratio of their volumes is
Find the area of the shaded region in figure, if ABCD is a square of side 14 cm, APD and BPC are semicircles.(use \(\pi = \frac{22}{7}\))
area of the shaded region
If \(P(A) = \frac{4}{15}\),then \(P(\overline{A})=\)
A box contains 7 red marbles and 9 green marbles. If a marble is drawn at random from the box, then the probability of not getting a red marble is
The value of \(\tan 26^\circ.  \tan 64^\circ\) is 
The angle of elevation of the top of the tower, whose height is 15 mts, at a point whose distance from the base of the tower is 15 mts is
The value of \(\sqrt{\frac{1+sin\ \theta}{1-sin\ \theta}}\) is
Convex lens is used in the microscope due to the following reason
Air bubble in water behaves like a
The radius of curvature of a spherical mirror is 16 cm. What is the focal length ?
If the magnification of the mirror is greater than 1, then the mirror is
A virtual image is formed by a concave mirror when the object is placed
The lens which always give a diminished and virtual image is
Which molecules are responsible for the blue colour of the sky ?
Which of the following molecules has a triple bond?
Which of the following is not an ionic compound?
The gas formed when Zn is treated with dil. HCl is
The molecule in which the central atom has one lone pair of electrons in its valence shell is
Plaster of Paris is___
The bond angle in CH4 molecule is
The compound formed in the following reaction is
\(\text{CH}_3-\text{CH}_2-\text{OH} \xrightarrow[\text{Conc. H}_2\text{SO}_4]{170^\circ\text{C}} \text{?}\)
What is the prefix used for functional group aldehyde ?
Functional group present in carboxylic acid is
What is the slurry mass of food that forms in the mouth due to chewing called ?