SSC (Marathi Semi-English) १० वीं कक्षा - Maharashtra State Board Question Bank Solutions for Science and Technology 1

Which of the following method is used to prevent the accumulation of greenish layer on brass due to corrosion?

Corrosion of silver causes a black layer of _______.

To prevent corrosion of iron and steel _______ method is used.

 _______ forms a green colour in the water.

Stainless steel is an alloy of _______.

When one of the metals in an alloy is mercury the alloy is called _______.

Pressure cooker : Anodizing : : Silver plated spoons : _______

Rusting of iron : Fe₂O₃ : : corrosion of copper : ______

Bronze : _______ : : Stainless steel : Fe + Cr + C

Find the odd one out and give its explanation.

Find the odd one out and give its explanation.

Find the odd one out and give its explanation.

Match the columns.

Write the name.

The defect of eye occurring due to ageing

Write the name.

An alloy of copper and tin-

Write the name.

Method used to prevent corrosion of copper.

Write scientific reason.

Presbyopia effect is more common in people over 40 years of age.

Write scientific reason.

Anodization method is useful for prevention of the corrosion of the aluminium.

Write scientific reason.

On exposure to air, silver articles turn blackish after some time.

Write scientific reason.

Coins are made from metals and alloys.