HSC Science (General) ११ वीं कक्षा - Maharashtra State Board Question Bank Solutions

Give reason.

Alkali metals have low ionization enthalpies.

Give reason.

Inert gases have exceptionally high ionization enthalpies.

Find out the type of isomerism exhibited by the following pair.

CH₃ – CH₂ – NH – CH₂ - CH₃ and CH₃ - NH - CH₂ - CH₂ - CH₃

Find out the type of isomerism exhibited by the following pair.

\[\begin{array}{cc}
\ce{CH3 - CH - CH2 - CH3 and CH3 - CH2 - O - CH2 - CH3}\\|\phantom{...........................................}\\
\ce{OH}\phantom{.........................................}\end{array}\]

Give reason.

Fluorine has less electron affinity than chlorine.

Find out the type of isomerism exhibited by the following pair.

Give reason.

Noble gases possess relatively large atomic size.

Find out the type of isomerism exhibited by the following pair.

Choose the correct option.

Which type of isomerism is possible in CH₃ CHCHCH₃?

Answer in one sentence.

The pressure that each individual gas would exert if it were alone in the container, what do we call it as?

Answer in one sentence.

When a gas is heated the particles move more quickly. What is the change in the volume of a heated gas if the pressure is kept constant?

If the density of a gas is measured at constant temperature and pressure then which of the following statement is correct?

Would it be easier to drink water with a straw on the top of Mount Everest or at the base? Explain.

State and write the mathematical expression for Dalton’s law of partial pressure and explain it with a suitable example.

Solve the following.

Nitrogen gas is filled in a container of volume 2.32 L at 32°C and 4.7 atm pressure. Calculate the number of moles of the gas.

Solve the following.

At 25°C and 760 mm of Hg pressure, a gas occupies 600 mL volume. What will be its pressure at the height where the temperature is 10°C and the volume of the gas 640 mL?

Solve the following.

A neon-dioxygen mixture contains 70.6 g dioxygen and 167.5g neon. If the pressure of the mixture of the gases in the cylinder is 25 bar. What is the partial pressure of dioxygen and neon in the mixture?

Solve the following.

Calculate the pressure in atm of 1.0 mole of helium in a 2.0 dm³ container at 20.0°C.

Solve the following.

Calculate the volume of 1 mole of a gas at exactly 20°C at a pressure of 101.35 kPa.

Solve the following.

Calculate the number of molecules of methane in 0.50 m³ of the gas at a pressure of 2.0 × 10² kPa and a temperature of exactly 300 K.