Explanation

Explanation

The acceleration of body due to the constant velocity is zero

Explanation

Ice appears white when it contains trapped air bubbles and minerals.

As these things freeze, gases are released, creating air bubbles and causing ice to shrink on occasion.

Explanation

Explanation

The process by which a substance changes from the solid phase to the liquid phase is known as melting.

Explanation

Diamond is an allotrope of carbon.

Hence, it is made up of carbon.

Diamond is a very expensive ornament.

It is composed of a single element carbon.

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Explanation

German Silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc

Explanation

Solder is an alloy of  Lead and tin  

An alloy is a mixture of chemical elements of which at least one is a metal. 

Explanation

The incorrect statement about non-metals is: Non-metals are solid at room temperature.

Non-metals are typically:

• Non-metal are gases
• Non-metals have low melting and boiling point
• Non-metal are poor conductor of heat and electricity
• Non-metal are dull and soft

Explanation

Oxygen is the most abundant element contained within living organisms

Oxygen composes about 65% of the whole-body mass

while 

Calcium is the most abundant mineral in the human body,

calcium makes up 1.5 to 2% of the total body weight.

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ND17-1-2023