General Science Objective MCQ Practice test For Exams Like KVS UPSC RRB

General Science Objective MCQ Practice test For Exams Like KVS UPSC RRB
General Science Quiz Objective Questions with Answers
1. During dehydration, the substance that is
usually lost by the body-
(a) Sugar
(b) Sodium chloride V
(c) Calcium phosphate
(d) Potassium chloride
(e) Phosphorus salts
Answer. (b)

2. Man is-
(a) A primate
(b) An animal
(c) A carnivore
(d) A rodent
(e) None of the above
Answer. (a)

3. The acid that can be used as a hypnotic is-
(a) Tartaric acid
(b) Benzoic acid
(c) Butanoic acid
(d) Barbituric acid
(e) Nicotinic acid
Answer. (d)

4. The speed of light was first measured by-
(a) Romer
(b) Newton
(c) Galileo
(d) Huygens
(e) Davy
Answer. (a)

4 The phenomenon of radio activity is
Associated with-
(a) Emission of electrons
(b) Emission of spectra
(c) Fusion of nucleus
(d) Decay of the nucleus
(e) None of these
Answer. (d)

5 A “Celsius” is a unit-
(a) Of electric potential difference
(b) Of heat potential difference
(c) Of trigonometric angle
(d) Equivalent to degree Kelvin
(e) Equivalent to degree centigrade
Answer. (e)

6 The men talking on the surface of the
Moon-
(a) Cannot hear the sound of each other
(b) Hear the same sound again and again
(c) Hear the sound of each other in less time
Than on the earth
(d) Can hear the sound but its intensity will
Be very low
(e) Find the sound of their voices magnified
Answer. (a)

7 The Theory of Electrolysis was propounded
By-
(a) Ohm
(b) Faraday
(c) Coulomb
(d) Coulomb and Faraday jointly
(e) None of these
Answer. (b)

8 Molecular weight of a substance is-
(a) Only a number
(b) Expressed in mesons
(c) Expressed in microns
(d) Expressed in grams
(e) Expressed

9 The crystalline substance that changes into
Liquid on exposure to moist air is said to be-
(a) Effervescent
(b) Eflorescent
(c) Deliquescent
(d) Volatile
(e) Non-hydroscopic
Answer. (c)

10. Which of the following methods is not used
In making hard water soft?
(a) Boiling method
(b) Adding washing soda
(c) Permutit process
(d) Demineralization
(e) Chlorinating
Answer. (e)


11Temporary hardness of water is due to the
Presence of-
(a) Nitrates of calcium and magnesium
(b) Chlorides of calcium and magnesium
(c) Bicarbonates of calcium and magnesium
(d) Sulphates of calcium and magnesium
(e) Sulphates of potassium and magnesium
Answer. (c)


12 What would you observe if you add, with
shaking, excess of dilute NaOH solution to
an aqueous solution of aluminium chloride?
(a) A white precipitate which dissolves in
Excess NaOH
(b) A permanent white precipitate is formed
Immediately
(c) A green precipitate forms which turns
Red on standing in air
(d) No change is noted at first; a white
Precipitate is formed on standing
(e) None of these is formed
Answer. (a)


13 Sulphuric acid can be differentiated from
Sulphurous acid by the addition of-
(a) Ferric chloride solution
(b) Magnesium power
(c) Litmus solution
(d) Sodium carbonate solution
(e) Sodium chloride solution
Answer. (a)

14 Which one of the following forms of phosphorous
Is most reactive?
(a) Black phosphorous
(b) White phosphorous
(c) Violet phosphorous
(d) Red phosphorous
Answer. (b)


15 Heavy water (Deuterium) is usually prepared
From-
(a) Heavy hydrogen
(b) Rain water only
(c) Sea water only
(d) River water only
(e) Ordinary water
Answer. (e)

16. German silver is an alloy-
(a) Of silver and copper
(b) Of silver and aluminium
(c) Of copper, zinc and nickel
(d) Of nickel and aluminium
(e) That was first made in Germany
Answer. (c)

17An extremely acid resistant alloy is-
(a) Brass
(b) Magnesium
(c) Ferro silicon
(d) German silver
(e) Ferrous sulphate
Answer. (c)

18. Sugar are converted in the liver into-
(a) Ptyalin
(b) Glycogen
(c) Carbon dioxide and water
(d) Monosaccharides
(e) Glucose
Answer. (b)

19. Which of the following substance can be
Used as antipyretic?
(a) Morphine
(b) Barbituric acid
(c) Paracetamol
(d) Benzedrene
(e) Cocain
Answer. (c)

20 The principal mineral in marble is-
(a) Carbon
(b) Sodium
(c) Iodine
(d) Calcite Crystal
(e) Chalk
Answer. (d)

21Which of the following is the sweetest?
(a) Sucrose
(b) Maltose
(c) Glucose
(d) Fructose
(e) Saccharin
Answer. (e)

22 Mostly nuclear reactions are caused by-
(a) Positrons
(b) Mesons
(c) Neutrons
(d) Protons only
(e) Charged particles
Answer. (e)

23 Which of the following is used to measure
The configurations of sugars?
(a) Threose
(b) Glyceraldehyde
(c) Glucose
(d) Ribose
(e) Pentose
Answer. (b)

24 Carbohydrates respond to-
(a) Molish’s test
(b) Marsh test
(c) Iodoform test
(d) Furfural test
(e) Luca’s test
Answer. (a)

25. An alcohol on oxidation first yield aldehyde
Which on further oxidation yield carboxylic?
Acid, both containing same number of car-
Bon atoms as the alcohol, the alcohol is-
(a) Primary alcohol
(b) Polyhydric alcohol
(c) Tertiary alcohol
(d) Secondary alcohol
(e) None of the above
Answer. (a)