HSC Science कक्षा ११ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Which of the alkali metal is having least melting point?

Define isotonic solutions.

For d-electron, the orbital angular momentum is

If uncertainty in position and momentum are equal, then minimum uncertainty in velocity is

A macroscopic particle of mass 100 g and moving at a velocity of 100 cm s^–1 will have a de Broglie wavelength of

The ratio of de Broglie wavelengths of a deuterium atom to that of an α - particle, when the velocity of the former is five times greater than that of later, is

How fast must a 54 g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green light 5400 Å?

Show that the circumference of the Bohr orbit for the hydrogen atom is an integral multiple of the de Broglie wavelength associated with the electron revolving around the nucleus.

What is the de Broglie wavelength (in cm) of a 160 g cricket ball travelling at 140 Km hr⁻¹?

Suppose that the uncertainty in determining the position of an electron in an orbit is 0.6 Å. What is the uncertainty in its momentum?

Show that if the measurement of the uncertainty in the location of the particle is equal to its de Broglie wavelength, the minimum uncertainty in its velocity (ΔV) is equal to 1/4π of its velocity (V).

What is the de Broglie wavelength of an electron, which is accelerated from the rest, through a potential difference of 100V?

A commercial sample of hydrogen peroxide marked as 100 volume H₂O₂, it means that

Volume strength of 1.5 N H₂O₂ is

Mention the uses of deuterium.

Explain the preparation of hydrogen using electrolysis.

For alkali metals, which one of the following trends is incorrect?

Which of the following statements is incorrect?

The temperatures at which real gases obey the ideal gas laws over a wide range of pressure is called __________.

Use of hot air balloon in sports and meteorological observation is an application of