NEET Test 143...

Electrons in a certain energy level (n = n₁) can emit 3 spectral lines. When they are in another energy level, n = n₂, they can emit 6 spectral lines. The orbital speeds of the electrons are in the ratio:

If the ratio of the coordination number of A to that of B is x : y, then the ratio of a number of atoms of A to that of B in the unit cell is:

Which of the following occur at the same trophic level?

Which of the following statements is false regarding ozone?

1. Ozone is less stable than dioxygen.

2. Ozone is paramagnetic.

3. Ozone is violet-black in solid-state.

4. Ozone molecule is linear.

Which of the following statement is incorrect regarding Yoghurt?

In which of the following ecosystems, inverted pyramid of biomass can be observed?

A body floats in a liquid contained in a beaker. If the whole system falls under gravity, them the upthrust on the body due to liquids is:

The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and a circular ring of the same radius about a tangential axis in the plane of the ring is:

Which of these is secondary pollutant?

Which statement regarding coenzyme is incorrect?