HSC Science (Computer Science) इयत्ता ११ वी - Maharashtra State Board Question Bank Solutions

Write condensed formulae and bond line formulae for the following structure.

\[\begin{array}{cc}
\ce{H\phantom{...}H\phantom{...}H\phantom{...}H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H - C - C - C - C - H}\\
|\phantom{....}|\phantom{....}|\phantom{....}|\\
\ce{H\phantom{...}H\phantom{...}H\phantom{...}H}
\end{array}\]

Write condensed formulae and bond line formulae for the following structure.

\[\begin{array}{cc}
\ce{H}\phantom{...}\ce{H}\\
|\phantom{....}|\\
\ce{N ≡ C - C - C - C ≡ N}\\
|\phantom{....}|\\
\ce{H}\phantom{...}\ce{H}
\end{array}\]

Write condensed formulae and bond line formulae for the following structure.

\[\begin{array}{cc}
\phantom{.........}\ce{H\phantom{...}H\phantom{...}H}\phantom{......}\ce{O}\phantom{.}\\
\phantom{.........}|\phantom{....}|\phantom{....}|\phantom{.....}//\phantom{..}\\
\ce{H - C - C - C - C}\\
\phantom{...........}|\phantom{....}|\phantom{....}|\phantom{.....}\backslash\phantom{.....}\\
\phantom{..........}\ce{H\phantom{...}H\phantom{...}H}\phantom{.....}\ce{OH}\phantom{..}
\end{array}\]

Write dash formulae for the following bond line formulae.

Acetone and acetaldehyde are the ozonolysis products of an alkene. Write the structural formula of an alkene and give IUPAC name of it.

Read the following reaction and answer the questions given below.

\[\begin{array}{cc}
\phantom{...............................}\ce{CH3}\\
\phantom{............................}|\\
\ce{CH3 - C = CH2 + HBr ->[benzoyl][peroxide] CH3 - CH - CH_2Br}\\
|\phantom{....................................}\\
\ce{CH3}\phantom{.................................}
\end{array}\]

1. Write IUPAC name of the product.
2. State the rule that governs formation of this product.

Write bond line formulae and condensed formulae for the following compound.

2, 2, 4, 4-tetramethylpentane

Distinguish between the meaning of the terms adsorption and absorption. Give one example of.

What is the difference between physisorption and chemisorption?

Choose the correct option.

Which of the following is Lewis acid?

What happens when crystalline Na₂CO₃ is heated?

A sample of pure water, whatever the source always contains ______ by mass of oxygen and 11.1% by mass of hydrogen.

Solve problem:

Convert the following degree Celsius temperature to degree Fahrenheit.

40 °C

Convert the following degree Celsius temperature to degree Fahrenheit.

30°C

Choose the correct option:

The number of significant figures in 1.50 × 10⁴ g is __________

Choose the correct option:

In Avogadro’s constant 6.022 × 10²³ mol^-1, the number of significant figures is ________

What do you mean by significant figures?

State the rules for deciding significant figures.

Distinguish between accuracy and precision.

Why there is a need of rounding off figures during calculation?