SSC (Marathi Semi-English) 10th Standard Board Exam [इयत्ता १० वी] - Maharashtra State Board Important Questions for Science and Technology 2

Give one example of Reuse.

Write the advantages of recycling.

State whether the following statement is true or false: 
E-waste cannot be recycled.

State the functions of the Maharashtra Pollution Control Board.

State the powders of Maharashtra Pollution Control Board (MPCB) to control the Air Pollution.

Answer the following question:
State two functions of MPCB for the prevention of water pollution.

Answer the following question:
How can we save electrical energy in day to day life?

Ethanoic acid has a .................... odour.
(a) Rotten eggs
(b) Pungent
(c) Vinegar-like
(d) Mild

The molecular formula of acetic acid is _________ .
(a) CH₃COOH
(b) CH₃ – CH₃
(c) C₆H₆
(d) C₂H₄

Give other two names of ethanol.

Give two properties of ethanol.

Explain the action of phosphorous trichloride with ethanol. Write the balanced chemical equation of the above reaction.

............ is a functional group of the alcohol.

When zinc powder is added to acetic acid ______________

(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom

Write the structural formulae of the following compound:

Ethane

Ethanoic acid _________.

Choose the correct alternative and rewrite the following:

Some acetic acid is treated with solid NaHCO3, the resulting solution will be _________________.

Choose the correct alternative and rewrite the following:

To observe the hydro and clearly, Raju should see it first under the low power lens and then under the high power lens in order to see _____________

Write any two physical properties of Ethanol.

Sodium is stored under kerosene. Give reason.