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Science General Knowledge - Multiple Choice #2

Can you answer these general knowledge Science questions?
Quiz by Lucknowite
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Last updated: April 18, 2019
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First submittedMarch 23, 2019
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1. Which of the following is colored gas?
Nitrogen Dioxide ✓
Hydrogen Sulphide ✓
Oxygen ✓
Nitrogen ✓
Nitrogen dioxide is reddish brown colored gas while other are colorless.
2. Father of Genetics
Watson ✓
Darwin ✓
Gregor Mendel ✓
Glauber ✓
3. In condition of equilibrium, sum of anticlockwise moments is equal to
Couple of moment ✓
None of the above ✓
sum of clockwise moments ✓
4. Which one of the following is an assumption by by an observer?
Centrifugal force ✓
Centripetal force ✓
Tension ✓
Reaction force ✓
Centripetal, Reaction and Tension are actual force while centrifugal force is assumed by an observer.
5. Work done when the angle between displacement and direction of force is 90 degrees.
-1 ✓
0 ✓
Infinite ✓
1 ✓
θ=90 degree
W=F x S x cos θ and cos 90 degree = 0.
Hence,W = 0
6. Which of the following statement is correct ?
Kinetic and potential energy is always equal ✓
Sum of potential and kinetic energy is constant ✓
Decrease in kinetic energy is equal to work done on the body ✓
Potential energy is caused due to motion ✓
K.E. can be equal to U but not always.
According to work - energy theorem,Increase in K.E = Work done and
U + K.E. = constant
7. Manufacture of Ammonia is done by which of the following processes ?
Baeyer's Process ✓
Ostwald's Process ✓
Haber's Process ✓
Contact Process ✓
Baeyer's process for Extraction of Aluminium....
Ostwald's Process for Nitric acid
Contact Process for Sulphuric acid
Haber's Process for Ammonia
8. Which of the following is wrong related to the following reaction?

N2 + 3H2 -> 2NH3
High Temperature ✓
Reversible ✓
High pressure ✓
Exothermic ✓
The above reaction is exothermic, reversible and proceeds in hingh pressure and low temperature.
9. Which among the following is known as Aqua Fortis?
Methane ✓
Nitric Acid ✓
Acetic Acid ✓
Hydrochloric Acid ✓
Alchemists called Nitric acid as Aqua fortis.
10. A physical balance is an example of
Not a lever ✓
Class III lever ✓
Class II lever ✓
Class I lever ✓
11. Which of the following element has highest electron affinity?
Sodium ✓
Argon ✓
Chlorine ✓
Magnesium ✓
On moving across a period electron affinity increases and since Argon, having stable electronic configuration, has zero electron affinity. So chlorine has highest electron affinity among given options.
12. Bonding present in NH4Cl includes
Co-valent and Co-ordinate ✓
Ionic, Co-valent and Co-ordinate ✓
Ionic ✓
Ionic and Co-valent ✓
Its N-atom consists of covalent bonds with three H-atoms and one coordinate bond with H-Atom and this ammonium ion is electrovalently bonded with chlorine ion.
13. Considering Electrolysis, which one from the following statements is wrong?
Anions migrate towards anode ✓
Electrolysis is a redox reaction ✓
Active electrode takes part in electrolysis ✓
Cathode is oxidizing electrode ✓
14. Real image is always
Magnified ✓
Inverted ✓
Virtual ✓
Upright ✓
Virtual image is upright.
Real image can magnified, diminished or equal size.
A real can't be a virtual image(both are opposite).
15. In case of a convex lens, image is formed at infinity when object is at
First Focus ✓
Infinity ✓
2f ✓
Between First Focus and optical center ✓
Object at infinity, image at focus.
Object at 2f,image at 2f
Object Between First Focus and optical center,image behind object
16. Vibrations of decreasing amplitude are
Natural ✓
Forced ✓
Resonance ✓
Damped ✓
17. Which of the following is not a ohmic resistor matched?
Metallic Conductors ✓
Dilute H2SO4 ✓
Solar cell ✓
Nichrome ✓
Other are ohmic resistors.
18. S.I. unit of conductance is
Volt ✓
siemen ✓
ampere ✓
ohm ✓
19. Isontones has/have same
Number of Neutrons ✓
Atomic Number ✓
Number of Protons ✓
Mass Number ✓
20. Elimination of one β - particle causes
Atomic number to decreased by one ✓
Atomic number decreased by two ✓
Loss of energy only ✓
Mass number decreased by four ✓
Mass number decreases by four and atomic no. decreases by two , when one α - particle is emitted.
Loss of energy takes place when γ - particle is emitted.
21. Combination of two light nuclei is known as ____ on which ________ is based.
Nuclear Fission, Hydrogen Bomb ✓
Nuclear Fission, Nuclear Reactor ✓
Nuclear Fusion, Atom Bomb ✓
Nuclear Fusion, Hydrogen Bomb ✓
Nuclear Fission is split of a heavy nucleus.
Nuclear reactor and atom bomb is based on Nuclear Fission.
22. Photo-Chemical phase of photosynthesis takes place in
Thylakoids ✓
Stroma ✓
Phloem vessels ✓
23. Hormones that promotes apical dominance
Cytokinins ✓
Gibbrellins ✓
Auxins ✓
ABA ✓
Gibbrellins promote internode growth.
Cytokinins inhibit apical dominance.
ABA is growth retarding hormone.
24. Increased number of RBCs is
Erythropenia ✓
Leukemia ✓
Polycythaemia ✓
Leukemia is increased no. of WBCs (abnormally).
Erythropenia is abnormally decreased no. of RBCs.
25. Another term for sperm duct is
Efferent duct ✓
Epididymis ✓
Vas deferens ✓
Afferent arteriole ✓
1 Comments
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Robin14
+1
Level 64
Jan 24, 2022
In question 19 there's a typo, isotone instead on isontone. Challengning but good!
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