Samacheer Kalvi Class 9 Science Applied Chemistry Questions - 1

Question: 1

Chlorinated hydrocarbons are used as

(A) Preservatives

(B) Food colourants

(C) Fertilizers

(D) Pesticides

Ans: D


Question: 2

SEM means

(A) Simple Electron Microscope

(B) Simple Electronic Microscope

(C) Scanning Electric Microscope

(D) Scanning Electron Microscope

Ans: D

Scanning Electron Microscope

Question: 3

Which of the following chemical substance is not used in alcohol test?

(A) Silver nitrate

(B) Potassium dichromate

(C) Hydrochloric acid

(D) Sulphuric acid

Ans: C

Hydrochloric acid

Question: 4

Which one is incorrect?

(A) Drug should not affect the receptor tissues

(B) Drug should not be toxic

(C) Drug should not cause any side effects

(D) Drug should not be affective in its action

Ans: D

Drug should not be affective in its action

Question: 5

AFM means

(A) Atoms Follow Microscope

(B) Atomic Friction Microscope

(C) Atomic Force Microscope

(D) Atom Force Microscope

Ans: C

Atomic Force Microscope

Question: 6

The groups responsible for the colour of an organic compound is called

(A) Auxochrome

(B) Chromgen

(C) Chromophore

(D) Isotopes

Ans: C


Question: 7

The age of a dead animal can be determined by using an isotope of

(A) Oxygen

(B) Phosphorous

(C) Iodine

(D) Carbon

Ans: D


Question: 8

1% solution of Iodoform is used as

(A) Antacid

(B) Antiseptic

(C) Antimalarial

(D) Antipyretic

Ans: B


Question: 9

Which of the following does not contain natural dyes?

(A) Turmeric

(B) Carrot

(C) Beetroot

(D) Potato

Ans: D


Question: 10

The cathode of an electrochemical reaction involves

(A) Catenation

(B) Neutralisation

(C) Oxidation

(D) Reduction

Ans: D