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

Question: 2

SEM means

(A) Simple Electron Microscope

(B) Simple Electronic Microscope

(C) Scanning Electric Microscope

(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

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

Question: 5

AFM means

(A) Atoms Follow Microscope

(B) Atomic Friction Microscope

(C) Atomic Force Microscope

(D) Atom Force Microscope

Question: 6

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

(A) Auxochrome

(B) Chromgen

(C) Chromophore

(D) Isotopes

Question: 7

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

(A) Oxygen

(B) Phosphorous

(C) Iodine

(D) Carbon

Question: 8

1% solution of Iodoform is used as

(A) Antacid

(B) Antiseptic

(C) Antimalarial

(D) Antipyretic

Question: 9

Which of the following does not contain natural dyes?

(A) Turmeric

(B) Carrot

(C) Beetroot

(D) Potato

Question: 10

The cathode of an electrochemical reaction involves

(A) Catenation

(B) Neutralisation

(C) Oxidation

(D) Reduction