Endothermic reactions - class-X
Description: endothermic reactions | |
Number of Questions: 49 | |
Created by: Shankara Prabhu | |
Tags: enthalpy changes chemical reaction chemical reactions and equations endothermic and exothermic reactions how far? how fast? chemistry chemical changes and reactions chemical reactions and their types element, compound and chemical reaction chemical equations |
Statement I: An exothermic reaction has a positive $\Delta H$.
Statement II: Heat must be added to the system for the reaction to occur.
Which of the following is the most exothermic reaction?
Reactions, involving liberation of heat, are called ___________ .
A chemical reaction in which heat is evolved is called a/an:
The reaction of nitrogen with oxygen to form nitric oxide is :
Which may be correct for exothermic reaction?
Identify the following reactions as endothermic or exothermic.
(i) $2NaHCO _3+ {energy}\rightarrow Na _2CO _3+H _2O+CO _2$
(ii) $2Mg+O _2\rightarrow 2MgO+energy$
Which of the following process is exothemic in nature?
When ammonium chloride is dissolved in water, the solution becomes cold.
Limestone can be changed into slaked lime in two chemical reactions.
1 When limestone, $CaCO _{3}$, is heated it decomposes into lime, $CaO$.
2 Water is slowly dripped onto the cooled lime. The lime appears to expand and
steam is produced. Slaked lime, $Ca(OH) _{2}$, is formed.
Which row shows the correct description of each of the chemical reactions?
Differentiate between an exothermic and an endothermic reaction.
In which of the following process heat is required?
Give an example of each of the following chemical changes: An endothermic reaction
If you, pour a few drops of petrol on your palm, it will feel cool as the petrol evaporates. This change is a/an:
The process(es) requiring the absorption of energy is/are:
In which of the following process energy is liberated:
Select endothermic reaction:
Which of the following are exothermic processes?
(A) Reaction of water with quick lime
(B) Dilution of an acid
(C) Evaporation of water
(D) Sublimation of Camphor (Crystals)
Which of the following is not an endothermic reaction?
The gas which is produced when sodium reacts with water:
The process of respiration is:
The reaction between carbon and oxygen can be represented as:
$C(g)\ + \ O _2(g)\rightarrow CO _{2}(g) + heat$
In which of the following type(s), the above reaction can be classified?
I. Combustion reaction
II. Displacement reaction
Ill. Endothermic reaction
IV. Combination reaction
When quickline is reacted with water, the reaction is:
Which of the following reaction is not endothermic in nature?
Select the correct alternative.
Which of the following is an exothermic process?
If you pour a few drops of petrol on your palm, it will feel cool as the petrol evaporates. This change a/an:
A chemical reaction in which energy is liberated is called:
During the dissolution of urea, heat:
One of the following is an exothermic reaction. This is:
One of the following is an endothermic reaction. This is:
The formation of a larger chemical from the smaller components is known as
Which is a reaction that absorbs energy?
Which term means a reaction which releases energy?
The dissolution in water of which of the following substances is endothermic?
The decomposition of vegetable into compost is an example of __________ reaction.
$Si + C \rightarrow$ SiC. This chemical reaction is an example for:
To start, every biochemical reaction is:
A solution of 500 ml of 0.2 M KOH and 500 ml of 0.2 M HCl is mixed and stirred; the rise in temperature is $T _1$. The experiment is repeated using 250 ml of each solution, the temperature raised is $T _2$. Which of the following is true :
The following is (are) endothermic reaction(s) :
During the reaction of some metals with dilute hydrochloric acid, the following observations were made. The temperature of the reaction mixture rises when aluminium (Al) is added mainly because :
Decomposition of ferrous sulphate is a/an:
Dilution of sulphuric acid is a/an:
Which of the following are endothermic process?
Chemical reactions occur with absorption of heat energy are called:
Which of the following is/are endothermic reactions?
In endothermic reactions: