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Posted by Kvvj Hogb 2 hours ago

CBSE > Class 10 > Science

3 answers

Kvvj Hogb 13 hours ago

0Thank You

Kvvj Hogb 13 hours ago

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1Thank You

Kvvj Hogb 13 hours ago

1Thank You

ANSWER

Zarul Sharma 2 hours ago

A chemical equation is balanced if the mass of total number of atoms in an element is equal on both sides i.e reactants and product.A chemical equation must be balanced because of law of conservation of mass which states that mass can neither be created nor be destroyed.

_.Nnanxy._ 🖇 4 days ago

Two nails should be inserted into the wooden or rubber cork and placed on a beaker as shown in the illustration. Connect a bulb, a 6-volt battery, and a wire to the switch using an iron nail. Dip the nails in glucose or alcohol after pouring some. Even though the bulb is connected to the switch, when you turn it on, it does not light up. Now, pour the HCL solution into the beaker. This time, the light bulb is turned on. This demonstrates that acid can carry electricity, alcohol, and glucose cannot. Hope it helps...

Naresh Kumar 1 week, 3 days ago

Chemical Changes: It is a permanent change and is irreversible in nature. Ex: A burning candle release heat energy. Physical changes: It is temporary change and is reversible in nature. It occurs due to - 1. Change in state. 2. Change in colour 3.Change in temperature etc. Ex- Melting of ice.

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