List of practice Questions

Which type of endosperm will be formed on hybridisation of diploid female plant and tetraploid male plant ?
Spot the wrong pair
Which of the following is correct for the pairs of cervical nerves and number of cervical vertebrae respectively ?
What is Fovea Centralis ?
Which of the following is not true for hormones ?
Which of the following are located in tunica media of human blood vessels ?
Which of the following is the effect of a plant hormone which is synthesized by more absence of light ?
Which of the following increases area of thoracic cavity during inhalation ?
What happens when concentration of solutes decreases in guard cells ?
How many Calvin cycles are required to produce 10 molecules of glucose ?
Both photosynthesis and respiration require
Which of the following will increase with the increase in temperature ?
The $C-C$ bond dissociation energy in kcal/mol is
This metal is extracted from its ore by formation of a cyanide complex
Propan-2-ol + ethanoic acid $ \xrightarrow{{}} $
The following is a coordination compound of iron
A telescope has an objective of focal length $100\, cm$ and an eye-piece of focal length $5\, cm$. What is the magnifying power of the telescope when it is in normal adjustment ?
A sealed container with negligible coefficient of volumetric expansion contains helium (a monoatomic gas). When it is heated from 300 K to 600 K, the average KE of helium atoms is
A choke is preferred to a resistance for limiting current in AC circuit because
A convex lens of glass $(\mu=1.5)$ has a focal length of $8\, cm$ when placed in air. What is the focal length of lens when it is immersed in water $\left(\mu=\frac{4}{3}\right) ?$
The current through a bulb is increased by $1 \%$. Assuming that the resistance of the filament remains unchanged the power of the bulb will
You are given two resistances $R_{1}$ and $R_{2} .$ By using them singly, in series and in parallel, you can obtain four resistances of $1.5\, \Omega, 2\, \Omega, 6\, \Omega$ and $8\, \Omega$. The values of $R_{1}$ and $R_{2}$ are
An object is placed at the focus of a convex mirror. If its focal length is $20\, cm,$ the distance of mirror is
Two waves are represented by $y_1 = 4 \sin \, 404 \pi t$ and $y_2 = 3 \sin \, 400 \pi t.$ Then
A rectangular coil of $100$ turns and size $0.1 \times 0.05\, m$ is placed perpendicular to a magnetic field of $0.1\, T$. The induced emf when the field drops to $0.05\, T$ in $0.05\, s$ is