List of practice Questions

If the X-ray tube is working at 20 kV then the minimum wavelength of X-rays will be

Hugo de Vries gave his mutation theory on organic evolution while working on

Histamine is secreted by

Gibberellin was first extracted from

Formation of corpus luteum is induced by

Find pH of 0.1 M NaOH solution.

Few cnidarians like corals have a skeleton composed of

Find error in calculation of resistivity of R = 65 ? 1 O l = 5 ? 0.1 mm d = 10 ? 0.5 mm

Favourable condition for product formation in the given reaction. $SO_{2}\left(g\right)\quad \frac{1}{2}O_{2}\left(g\right)\quad\quad SO_{3}\left(g\right);$ $\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad\quad H=-42\,kj\,is$

Energy flow in an ecosystem is

Dikaryon formation is the characteristic feature of

[Cr(HO)]Cl (atomic number of Cr = 24) has a magnetic moment of 3.83 BM. The correct distribution of 3d-elections in the chromium present in the complex is

Element A and B have electronegativities 3 and 1.2 respectively? Nature of bond between them?

Cell wall of fungi is composed of :

Cassiterite is ore of :

Both chasmogamous and cleistogamous flowers are present in

Best stage to observe shape, size and number of chromosomes is ______

Grignard reagent can?t be prepared from

Formula of plaster of paris is :

Which of the following is invert sugar?

Due to ? decay, what is the effect on neutron and proton numbers?

Two concentric circular coil of radius 20 cm and 30 cm carries current of 2A and 3A respectively in opposite direction then magnetic field at centre will be :-

A particle is thrown vertically up with speed 6 m/s. Find maximum height achieved.

Find pressure on swimmer at a depth of 10 m in water.

The magnitude of point charge due to which the electric field 30 cm away has the magnitude ,$2 \, NC^{-1}$ will be