List of practice Questions

The work done by the centripetal force F when the body completes one rotation around the circle of radius R is:

The storage of energy at consumer level is known as:

The standard enthalpy of formation $\left(\Delta H^{\circ}_{f}\right)$ at 298 K for methane, $CH_4(g)$, is $- 74.8 \,kJ\, mol^{-1}$. The additional information required to determine the average energy for C�H bond formation would be:

The shifting cultivation method called jhum belongs to the category of

The rms value of the electric field of the light coming from the sun is 720 N/C. The average total energy density of the electromagnetic wave is :

The reagent used in Gatterman Koch aldehyde synthesis is:

The high boiling point of water is due to which reason:

The formula mass of Mohr's salt is $392$. The iron present in it is oxidised by $KMnO_4$ in acid medium. The equivalent mass of Mohr's salt is

The enthalpy of combustion at $25^{\circ} C$ of $H _{2}$, cyclohexane $\left( C _{6} H _{12}\right)$ and cyclohexene $\left( C _{6} H _{10}\right)$ are $-241,-3920$ and $-3800\, kJ / mol$ respectively. The heat of hydrogenation of cyclohexene is :

The element ${ }_{90} Th ^{232}$ belongs to thorium series. Which of the following will act as the end product of the series?

Sea fan belongs to:

Pigment anthocyanin is located in:

$ PCl_{3} $ and cold water reacts to produce which of the following?

Of the vectors given below, the parallel vectors are, $ A = 6 \hat i + 8 \hat j$ $30mm B = 210 \hat i + 280 \hat k$ $ C = 0.3 \hat i + 0.4 \hat j$ $ D = 3.6 \hat i + 6 \hat j + 4.8 \hat k$

Nucleolus is formed by

Nitrobenzene on treatment with zinc dust and aqueous ammonium chloride gives

Myelin sheath is found in

Murrah is productive breed of

Methyl- $\alpha-D$-glucoside and methyl $-\beta-D$-glucoside are

Which of the following is the simplest amino acid?

Kappa particles indicate:

Internal bisector of $\angle$ A of AABC m eets side BC at D. A line drawn through D perpendicular to AD in tersects the side AC a t E an d side AB at F. If a , b, c represent sides of $\triangle$ ABC, then

In radius of a circle which is inscribed in a isosceles triangle one of whose angle is $ 2 \pi / 3, \, is \, \sqrt 3 $, then area of triangle (in sq units) is

The value of $\int \limits \frac {(x^2-1)dx}{x^3 \sqrt {2x^4-2x^2+1}} $ is

Cricket bat is made from the wood of: