List of practice Questions

The given combination will work as

When a light ray enters from oil to glass interface. Velocity of light changes by a factor of \((μ_{oil} = 2, μ_{glass} = \frac{3}{2}).\)

Find the amount of charge flown from Y to X when switch S is closed.

If the same charge 'q' is placed inside a sphere and cube having radius 1 m and side 2 m respectively. What will be the ratio of the flux passing through them:

Psychrometer is used to measure

A solution containing $62\, g$ ethylene glycol in $250 \,g$ water is cooled to $-10^{\circ}C$. If $K_f$ for water is $1.86\, K\, kg \,mol^{-1}$, the amount of water (in g) separated as ice is :

Haemoglobin and gold sol are examples of :

What would be the molality of $20\%$ (mass / mass) aqueous solution of $KI$? (molar mass of $KI = 166\, g\, mol^{-1}$)

Bicarpellary ovary with obliquely placed septum is seen in :-

Which one of the following statements regarding post-fertilization development in flowering plants is incorrect ?

The given figure shows transport of two molecules $A$ and $B$ through three different modes of facilitated diffusion. Select the correct option regarding it.

Respiratory Quotient (RQ) value of tripalmitin is -

In the dicot root the vascular cambium originates from :-

Following table summarises the comparisons between phyllodades and cladodes (cladophylls). Pick up the wrong differences and select the correct option,

What type of pollination takes place in Vallisneria?

Which of the following ecological pyramids is generally inverted ?

In pteridophytes, main plant body is a , which is into true roots, stem and leaves. Fill the blanks in above statement and select the correct option.

If a circle of radius $R$ passes through the origin $O$ and intersects the coordinate axes at $A$ and $B$, then the locus of the foot of perpendicular from $O$ on $AB$ is :

If the angle of intersection at a point where the two circles with radii 5 cm and 12 cm intersect is $90^{\circ}$, then the length (in cm) of their common chord is :

If a circle $C$ passing through the point $(4,0)$ touches the circle $x^2 + y^2 + 4x - 6y = 12$ externally at the point $(1, -1)$, then the radius of $C$ is :

If one end of a focal chord of the parabola, $y^2 = 16x$ is at $(1, 4),$ then the length of this focal chord is

The complex that has highest crystal feild splitting energy $(\Delta )$, is :

The number of sigma ($\sigma$)and pi ($\pi$) bonds in pent-2-en-4-yne is :

The pair that does NOT require calcination is:

Hall-Heroult's process is given by :