1.
An acid can react with
2.
A salt derived from strong acid and weak base will dissolve in water to give a solution which is
3.
Which of the following does not form an acid salt?
4.
Which of the following metal can displace hydrogen from the aqueous solution of sodium hydroxide?
5.
An aqueous solution with pH=1 is
6.
The pH of a solution of hydrochloric acid is 4. The molarity of solution is
7.
When water is added to quick lime the reaction is
8.
Carbonic acid H2CO3 is
9.
If pH of solution is 13, it means that it is
10.
Which is a base and not an alkali
11.
Which of the following salts on dissolving in water will give a solution with pH less than 7 at 298 K?
12.
The H+ ion concentration of a solution is 1*10-5M. the solution is
13.
Which of the following gives carbon di oxide on heating?
14.
Materials used in the manufacture of bleaching powder are
15.
Bleaching powder gives smell of chlorine because it
16.
Baking powder contains baking soda and
17.
Plaster of Paris is made from
18.
Which of the following is evolved when Na2CO3 is heated?
19.
Setting of plaster of Paris takes place due to
20.
Chemical formula of baking soda is
21.
A white chemical becomes hard on mixing with water and is used in surgery. it is
22.
The chemical name of marble is
23.
Washing soda has the formula of
24.
Plaster of Paris harden by
25.
The difference of water molecules in gypsum and plaster of Paris is
26.
Identify the compound X and the products it forms
X+ Zn=A + H2
X+ HCl= B+ H2O
X+ CH3COOH=C+ H2O
27.
How many water molecules does hydrated calcium sulphate contain?
28.
The apparatus given in the adjoining figure was set up to demonstrate electrical conductivity
Which of the following statement(s) is (are) correct?
-
bulb will not glow because electrolyte is not acidic
-
bulb will glow because NaOH is strong base and furnishes ions for conduction
-
bulb will not glow because circuit is incomplete
-
bulb will not glow because it depends upon the type of electrolytic solution
29.
If a few drops of a concentrated acid accidently spill over the hand of a student, what should be done?
30.
A solution reacts with crushed egg shells to give a gas that turns lime water milky. The solution contains
31.
Which of the following salts does not contain water of crystallization?
32.
Sodium hydrogen carbonate is reacting with acetic acid to produce a gas. Which of the following statement(s) are correct about the gas?
1. It turns lime water milky
2. It extinguishes a burning splinter
3. It is dissolved in sodium hydroxide
4. It has a pungent smell
33.
Common salt is used in the kitchen can also be used as the raw material for making
-
Washing soda
-
Bleaching powder
-
Baking soda
-
Slaked lime
35.
Ph of gastric juice is
36.
Milk of magnesia is a
37.
Tooth enamel is made up of
42.
Main chemicals are used in acid soda fire extinguisher
43.
Dock plant is used to reduce the pain
44.
Mild acid is used to make baking powder to reduce
45.
Acid present in tomato
46.
Parents acid and base of the common salt are
48.
Water of crystallization of POP is
49.
Margarine… ingredient is obtained from chlor- alkali
50.
One of the main components of acid rain is
51.
The substance can absorb moisture is
52.
X+Y= Na2SO4+ HCl. X and Y are
53.
We need water to get acidic properties of acids
54.
Litmus is obtained from
55.
Which of the following phenomena occur, when a small amount of acid is added to water?
56.
Which of the following substances will not give CO2 on treatment with acids?
57.
Which of the following is true about litmus?
1.Litmus solution is a purple dye
2. It is extracted from lichen
3. In neutral solution it is colourless
58.
Which of the following statements is correct about an aqueous solution of an acid and of a base?
1. higher the pH, stronger the acid
2. higher the pH, weaker the acid
3. lower the pH, stronger the base
4. lower the pH, weaker the base
61.
Chlor-alkali process is electrolysis of
62.
Which gas is evolved when metal carbonate is reacting with acid?
64.
The term pH stands for
65.
Which of the following pair is reacting with both acid and base?
66.
Mixing of acid with water is called
67.
Which of the following is not a natural acid base indicator?
68.
A boy wants to remove grease stain from his shirt. So he should use
69.
When the pH is 4 the no of x is more. X is
71.
The correct statement regarding universal indicator is
72.
We need the temperature for obtaining calcium hemi hydrate degree celcius is
73.
OH- is present in acidic solution
74.
Yellow stain of curry in soap solution turns
75.
On dilution a strong acid is converted into
78.
Baking soda is a component of
79.
Calcium hydrogen carbonate is dissolved in water
80.
The bi product of baking soda is
81.
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish orange. It should be treated with
83.
A salt can be produced by reaction between
1. a weak base and a strong acid
2. meatal oxide and water
3. metal and mineral acid
4. metal oxide and mineral acid
84.
The increasing order of hydrogen ions
85.
During dilution of an acid
86.
Metal oxide is dissolving into water turns
87.
Egg shell is reacting with acid to produce
88.
The replaceable hydrogen of a weak acid is present at
89.
China rose in basic solution turns
90.
We can reduce the smell of onion
91.
Acidulated water helps in
93.
Rain is called acid rain when its
94.
Permanent hardness of water is removed by
95.
Marble cancer is due to
96.
Bleaching powder is prepared by passing chlorine through
97.
Mineral acids are usually
98.
Rock salt is obtained by
99.
Common salt is an important symbol of
100.
The other name of crystal is
