Write the test of colourless liquid using cobalt chloride.

Important Questions on Energy Transfers in Chemistry

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

The reaction in which heat is absorbed is called _____ reaction.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

A substance that is burnt to obtain heat energy is called a _____.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

Photosynthesis is a _____ reaction. (endothermic / exothermic)

MEDIUM

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

_____ is the process due to which the [

H^{+}

] ions of an acid react completely or combine with the [

{OH}^{-}

] ions of a base to give salt and water only.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

Leaves carry out _____ to prepare food.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

A liquid fuel used in homes is _____. (wood / kerosene)

MEDIUM

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

The reaction which proceeds by the evolution of heat is known as _____ reaction.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

Complete the given analogy:

Fruits : protect seeds :: leaves : _____.

(Mention the process)

MEDIUM

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

Fill in the blanks by choosing the correct words from the list given below:
List: Galvanisation, physical, calcium carbonate, new, calcium hydroxide, energy, substance, saturated, sodium carbonate, moist.
When carbon dioxide gas is passed through lime water, it turns milky due to the formation of _____.

MEDIUM

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

Good fuel requires _____ ignition temperature.

MEDIUM

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

_____ reagent can be used to distinguish a solution containing a lead salt from a solution containing zinc salt.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

Lime water turning milky when carbon dioxide gas is passed through it is a _____ change.

EASY

Science>Chemistry>Energy Transfers in Chemistry>Exothermic and Endothermic Processes

When carbon dioxide is passed through lime water, it turns milky due to the formation of _____. (Write the chemical name of the compound formed)