EASY
10th Maharashtra Board
IMPORTANT
Earn 100

Explain the term.

Ores

Important Questions on Metallurgy

EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 4

Explain the term.

Minerals

EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 4

Explain the term.

Gangue

MEDIUM
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 5

Write scientific reason.

Lemon or tamarind is used for cleaning copper vessels turned greenish.

EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 5

Write scientific reason.

Generally, the ionic compounds have high melting points.

EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 5

Write scientific reason.

Sodium is always kept in kerosene.

MEDIUM
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 5

Write scientific reason.

Pine oil is used in froth flotation.

EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 5

Write scientific reason.

Anodes need to be replaced from time to time during the electrolysis of alumina.

MEDIUM
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 8 - Metallurgy>Exercise>Q 6

When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.