List of practice Questions

Recognize the figure and find out the correct matching.

Which of the following disease is now considered nearly eradicated from India?

A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is $2.7×10^3 kg/m^3$ and its Young's modulus is $9.27×10^{10} Pa$. What will be the fundamental frequency of the longitudinal vibrations?

Which one of the following is not a property of cancerous cells?

Solve $tan^{-1} (\frac xy)-tan^{-1}(\frac {x-y}{x+y})$ is equal to

Plasmids are used as cloning vectors for which of the following reasons?

Mammals may drink water and also get it from

The pK_b of dimethylamine and pK_a of acetic acid are 3.27 and 4.77 respectively at T (K). The correct option for the pH of dimethylammonium acetate solution is

Draw the number line and represent the following rational numbers on it:
(i) $\frac{3}{4}$(ii) $\frac{-5}{8}$ (iii) $\frac{-7}{4}$ (iv) $\frac{7}{8}$

If the coefficient of x⁷ in expansion of $(ax- \frac{1}{bx^2})^{13}$ is equal to the coefficient of x^-5 in expansion of $(ax + \frac{1}{bx^2})13$, then a⁴b⁴ is ______

Examine the continuity of the function f(x) = 2x²-1 at x = 3.

Can this be a net for a die? Explain your answer.

Why is it advised to tie any luggage kept on the roof of a bus with a rope?

Write the smallest 5-digit number and express it in the form of its prime factors.

1 fermi is equal to

At constant temperature 200 $cm^3$ of $N_2$ at 720 mm and 400 $cm^3$ of 02 at 750 mm pressure are put together in a one litre flask. The final pressureof mixture is

At 300 K, 36 g of glucose present per litre in its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of a urea solution is 1.52 bar its at the same temperature, concentration is

Artificial ecosystem are :

Aniline is prepared in presence of $Fe/HCl$ from

Angular width of central maxima is $\frac{\pi}{2}$. When a slit of width a is illuminated by a light of wavelength 7000Å, then a =

An eraser weighing $ 1\,N $ is pressed against a vertical black board with a normal force of $5\, N$. The coefficient of friction $ \mu $ between eraser and Blackboard is approximately $0.4$. The force along the blackboard required to move the eraser is

1$^\circ$ Alkyl isocyanide on reduction with Zn-Hg/ HCI give

2 L of $SO_2$ gas at 760 mm Hg are transferred to 10 L flask containing oxygen at a particular temperature, the partial pressure of $SO_2$ in the flask is

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