General Science MCQ – 76 (Chemistry)

chemistry, physics, biology

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General Science MCQs including Physics, Chemistry, Biology. This help is General Eligibility Test like Entrance Exam, Sainik School, NDA, Army, All India Competitive exam, and All HP Exams. You can also play our weekly quiz and download all quizzes PDF as well.

1. If a conductor length is increased,100% then keeping all other parameters fixed, what will be the increase in power dissipate?
(A) 100%
(B) 200%
(C) 300%
(D) 400%

2. What happens to the conductivity of semiconductors when there is an increase in temperature?
(A) Decrease
(B) Increase
(C) First, increase and then decrease
(D) Remain constant

3. Semiconductors have electrical conductivity?
(A) More than metals but less than insulators
(B) Less than thermistor but more than an insulator
(C) Equal to the thermistor
(D) Less than metals but more than insulator

4. When temperature increase the conductance of conductors is?
(A) Decrease
(B) Increase
(C) First, increase then decrease
(D) Remain constant

5. When acids dissolve in water it releases?
(A) H+ ion
(B) H- ion
(C) H3O+ ion
(D) H3O2+ ion

6. Which element is always present in Arrhenius acid?
(A) Oxygen
(B) Nitrogen
(C) Hydrogen
(D) None of the above

7. Ostwald’s dilution law is applicable to?
(A) Strong electrolytes only
(B) Weak electrolytes only
(C) Non- electrolytes
(D) Strong as well as weak electrolytes

8. In the titration of iodine against hype the indicator used is?
(A) Starch
(B) Potassium ferricyanide
(C) Methyl orange
(D) Methyl red

9. Poor conductor of electricity is?
(A) Silver
(B) Aluminium
(C) Water
(D) Copper

10. One litre of 0.5M KCI solution is electrolysed for one minute in a current of 16.08 mA. Considering 100% efficiency, the pH of the resulting solution will be?
(A) 7
(B) 9
(C) 8
(D) 10

General Science MCQ – 75 (Biology)

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