chemistry test paper

1. SECTION A
1. According to Robert Boyle, which of the following is not an acid’s property?
a) turns blue Litmus red b) sour in taste c) neutralize bases d) bitter in taste
2. A proton donor is a chemical that
a) protongenic b) protophilic c) amphoteric d) amphiprotic
3. Which of the following compounds can’t be used as an acid and a base at the same
time?
a) amphoteric substance b) amphiprotic substance c) ampholyte d) protophilic
4. Lewis concept does explain the behaviour of __________
a) bases b) salts c) protonic acids d) amphoteric substances
5. Which of the following is not a Lewis acid?
a) aluminium chloride b) sodium ion c) sulphur tetrafluoride d) hydroxide
ion
6. The PH of which of the following is more than 7?
a) gastric juice b) vinegar c) blood plasma d) lemon juice
7. What is the Neutralization process in reverse?
a) formation b) hydrolysis c) reaction d) splitting
8. Acid strength increases in the order of _____________
a) HI ≪ HCl ≪ HBr ≪ HF
b) HF ≪ HBr ≪ HCl ≪ HI c) HF ≪ HCl ≪ HBr ≪ HI d) HCl ≪ HF ≪ HBr ≪ HI
9. Amphoteric molecules include which of the following?
a) Acetic acid b) Malic acid c) Sugars d) Water

2. 10. Which sort of acid is CH3OH?
a) Bronsted acid b) Lewis acid c) Arrhenius acid d) Lewis and Arrhenius
acid

3. SUBJECTIVE
SECTION B
Q2: Attempt all questions
1.Write the limitations of Arrhenius acid base , and lowry –Bronsted acid and base.
2. Define Arrhenius Acids and base.
3. Define Lowry – Bronsted acids and base.
4.Defien salt , and what is normal salt and acid salt.
5.What are the uses of salts.
6.What are the importance of equilibrium constant
7.Defien Le-chatlier’s principle
8.Defien law of mass action
9.Defien and explain KC
10. write the Macroscopic characteristics of reactions.
11. What is PH scale , and why it is used.
SECTION C
1. Define and explain law of mass action with example completely
2. a. Explain with examples which tell us that NH3 act as a base , and acid.
b. Write the color of following indicators in acidic solution, and basic solution
1. Methyl orange 2. Bromothymol blue 3. Phenolphthalein
3. Explain in detail the auto ionization of water.
b. Explain the how to use the litmus or PH paper
GOOD LUCK 