List of practice Questions

A paramagnetic substance is placed in a weak magnetic field and its absolute temperature $T$ is increased. As a result, its magnetisation
The equation of a simple harmonic wave is given by $y=5\, \sin \frac{\pi}{2}(100\, t-x)$, where $x$ and $y$ are in meter and time is in second. The period of the wave in second will be
A bimetallic strip consists of brass and iron when it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because
A convex lens of glass $ (\mu = 15)$ has a local length of 8 cm when placed in air. What is the strength of lens when it is immersed in water $\bigg(\mu = \frac{4}{3}\bigg) ? $
A beam of monochromatic blue light of wavelength $4200\, ?? in air travels in water of refractive index $4/3$. Its wavelength in water will be:
The twinkling effect of star light is due to
A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of the incident beam. At the first minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of slit is
A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and the latter is equal to $ \frac{3}{4} $ the angle of prism. The angle of deviation is
The compound that can exhibit geometrical isomerism is
The process of conversion of ozone into oxygen $\left(2O_{3} \longrightarrow 3O_{2}\right)$ involves following steps $O _{3} {<=>[{\text { Fast }}]} O _{2}+ O$ $O + O _{3} {->[{\text { Slow }}]} 2 O _{2}$ The rate law expression for this process is
Chlorination of which of the following substance is a substitution reaction?
Which of the following acts as a reducing agent to reduce $ W{{O}_{3}},Mo{{O}_{3}} $ and $ Ge{{O}_{2}} $ into metals?
Natural rubber is
Consider the following hypothetical reaction. $A+B \rightleftharpoons C+D ; \,\,\,K_{c}=1 \times 10^{-4}$ Which of the following statements is true for this reaction ? In this reaction,
Dissolution of ammonium chloride in water leads to a cooling sensation. At constant temperature, this process is accompanied by
Process used for amplification or multiplication of DNA for finger printing is
Hypersecretion of mineralocorticoids leads to
The banding patterns of chromosomes $3$ and $6$ of man and chimpanzee show that
Renal portal system carries blood
Protistan protozoan having nuclear dimorphism is
Pressure sensitive receptors in the dermis are
Ommatidia serve the purpose of photo reception in
Colle's fracture is associated with
Frenulum is
Black water fever is caused by