APPLIED
CHEMISTRY
TEXT BOOK EXERCISES
I. Choose the correct answer :
1.
One Nanometre is
(a)
10-7 metre
(b)
10-8 metre
(c)
10-6 metre
(d)
10-9 metre
[Answer: (d) 10-9 metre]
[Solution: 1
nanometre is also called one billionth of a metre]
2.
The antibiotic Penicillin is obtained from ――― .
(a)
plant
(b)
microorganism
(c)
animal
(d)
sunlight
[Answer: (b) microorganism]
3.
1% solution of Iodoform is used as
(a)
antipyretic
(b)
antimalarial
(c)
antiseptic
(d)
antacid
[Answer: (c) antiseptic]
4.
The cathode of an electrochemical reaction involves ――― .
(a)
oxidation
(b)
reduction
(c)
neutralisation
(d)
catenation
[Answer: (b) reduction]
[Solution: It
involves gain of electrons]
5.
The age of a dead animal can be determined by using an isotope of ――― .
(a)
carbon
(b)
iodine
(c)
phosphorous
(d)
oxygen
[Answer: (a) carbon]
[Solution: C614 isotope is used]
6.
Which of the following does not contain natural dyes?
(a)
Potato
(b)
Beetroot
(c)
Carrot
(d)
Turmeric
[Answer: (a) Potato]
7.
This type of food protect us from deficiency diseases.
(a)
Carbohydrates
(b)
Vitamins
(c)
Proteins
(d)
Fats
[Answer: (b) vitamins]
8.
Radiochemistry deals with
(a)
oxidants
(b)
batteries
(c)
isotopes
(d)
nanoparticles
[Answer: (c) isotopes]
9.
The groups responsible for the colour of an organic compound is called
(a)
isotopes
(b)
auxochrome
(c)
chromogen
(d)
chromophore
[Answer: (d) chromophore]
10.
Chlorinated hydrocarbons are used as
(a)
fertilizers
(b)
pesticides
(c)
food colourants
(d)
preservatives
[Answer: (b) pesticides]
II. Fill in the blanks :
1. Electrolytic cell is an electrochemical
cell which converts electrical energy into chemical change (Reaction).
2. Painkiller
drugs are called Analgesics
.
3. Indigo
is a Vat dye.
4. Nitrogen , Phosphorous and Potassium are macro nutrients
required for plant growth.
5. Ninhydrin is a chemical used in finger
print analysis.
III. Match the following :
Antipyretics
- Large surface area
Corrosion
prevention - Iodine-131
Hyperthyroidism
- Fever
Nanoparticle
- Body building
Proteins
- Electroplating
Answer:
Antipyretics - Fever
Corrosion prevention - Electroplating
Hyperthyroidism - Iodine-131
Nanoparticle - Large surface area
Proteins - Body building
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