1.Which acid plays vital role in stomach in digestion process?
A. Sulphuric Acid
B. Phosphoric acid
C. Hydrochloric acid
D. Acetic acid
SSC GK 2019
2.Which of the following displays both the name of the application and the name of the spreadsheet in MS-Excel?
A. Title bar
B. Tool bar
C. Task bar
D. Menu bar
Delhi Police Constable 27 Nov 2020 S3
3.Which of following is present in air bags of Cars?
A. Sodium Azide
B. Sodium Nitrate
C. Helium
D. Calcium Carbide
SSC GK 2019
4.Cell membranes are mainly composed of _____.
A. Phospholipids
B. Proteins
C. Stomata
D. Both A & B
SSC GK 2019
5.How many amino acids appear in genetic code?
A. 20
B. 30
C. 46
D. 56
SSC GK 2019
6.Which gas is responsible for the formation of brown air in traffic congested cities?
A. Sulphur dioxide
B. Carbon dioxide
C. Nitrogen Dioxide
D. Methane
7.Which of the following is the pathogenic agent of the disease diphtheria?
A. Clostridium perfringens
B. Corynebacterium diphtheriae
C. Staphylococcus aureus
D. Listeria monocytogenes
SSC GK 2019
8._______ is the branch of biology that deals with the study of the structure
of organisms and their organs.
A. Ecology
B. Anatomy
C. Chronobiology
D. Mycology
SSC CHSL 01 July 2018 S3PYSP
9.On industrial scale sodium metal is prepared by electrolysis of
fused________.
A. NaOH
B. NaCl
C. NaO
D. NH3
SSC GK 2019
10.Which type of blood cells play important role in hypersensitivity?
A. Basophils
B. Platelets
C. Red Blood cells
D. B & T Cells
SSC GK 2019
11.Rh factor of blood groups was dicovered by ______.
A. Weiner and Treviranus
B. Landsteiner and Demock
C. Landsteiner and Johnson
D. Landsteiner and Wiener
SSC GK 2019
12.Phylloquinone which helps in formation of prothrombin is generally known
as vitamin _____.
A. Vitamin D
B. Vitamin E
C. Vitamin K
D. Vitamin C
13.Non essential fatty acids can be synthesized by _____ .
A. Pyruvic Acid
B. Tryptophan
C. Acetyl coenzyme A
D. Vitamin A
SSC GK 2019
14.In hydropower plants, which energy of water is utilized to generate
electricity?
A. Kinetic energy
B. Thermal energy
C. Potential energy
D. Chemical energy
DFCCIL 2018
15.An instrument called ......... measures electric potential difference’ in a
circuit.
A. Gyroscope
B. Ohmmeter
C. Voltmeter
D. Thermometer
SSC GD Constable 11 March 2019 S2
16.Which of the following of Newton's laws explains the recoiling of a gun
when a bullet is fired?
A. Law of gravitation
B. Third law of motion
C. First law of motion
D. Second law of motion
DFCCIL 2018
17.A seesaw is an example of which concept of physics?
A. Current
B. Time
C. Electricity
D. Force
SSC GD Constable 1 March 2019 S2
18.Alpha-linolenic acid is a ________.
A. Essential amino acid
B. Essential ester
C. Essential pyruvate ion
D. Essential fatty acid
19.Which is the smallest mammal in the world?
A. Tasmanian devils
B. Fruit bat
C. Kinkajou
D. Bumblebee bat
SSC GK 2019
20.Silicosis is caused by poisoning of which of following?
A. Marble
B. Asbestos
C. Silica
D. Mica
