SSC (English Medium) इयत्ता ८ वी - Maharashtra State Board Question Bank Solutions

Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.

Hydrogen chloride

The region in a sound wave, with higher pressure and density, is called ______ and that with low pressure and density is called ______.

Medium is ______ for generation of sound.

The total number of compressions and rarefactions produced per second in a sound wave is 1000. The frequency of the sound wave is __________.

Different sound notes have different ______.

How are different sound notes generated in musical instruments like guitar, which uses strings for sound generation, and flute, which uses blown air for sound generation?

How is sound produced in a human larynx and a loudspeaker? 

Match the following:

Plastic shows ______ property, hence it can be moulded to any shape.

Motor cars are coated with ____________.

Who is my partner?

Write uses of PVC.

Write the natural or manmade raw material of the following items.

Mattress, glass vessel, bangle, chair, gunny bag, broom, knife, pen.

How the plastic is produced?

Distinguish between.

Man made material and natural material.

Distinguish between 

Thermoplastic and thermosetting plastic.

Explain the effect of following materials on environment and human health.
1. Plastic
2. Glass
3.Thermocol.

Which measures will you arrange to minimize the environmental problems arising due to non-degradable plastic?

Write short note.

Glass production.

Write short note.

Uses of plastic.