Practice Practice quiz - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) What gases are filled in fluorescent tube?
(a)
(b)
(c)
(d)
Q-2) Consider the following statements regarding a motor car battery:
- The voltage is usually 12 V.
- Electrolyte used is hydrochloric acid.
- Electrodes are lead and copper.
- Capacity is expressed in ampere-hour.
Which of the above statements are correct?
(a)
(b)
(c)
(d)
Q-3) On charging by conduction, mass of a body may
(a)
(b)
(c)
(d)
On charging by conduction, body may gain mass, if it acquires negative charge. It may lose mass, if it acquires positive charge.
Q-4) If the conductivity of a semiconductor is only due to break up of the covalent bonds due to thermal excitation, then the semiconductor is called
(a)
(b)
(c)
(d)
Q-5) The current in the armature of a motor is reversed at every half cycle due to the action of a(n)
(a)
(b)
(c)
(d)
Q-6) Nickel-Cadmium (Ni-Cd) battery is used in
(a)
(b)
(c)
(d)
Q-7) Which one among the following is used to make periscope?
(a)
(b)
(c)
(d)
Q-8) A wire with black insulation during electric supply is
(a)
(b)
(c)
(d)
Q-9) Which of the following is an artificial magnet?
(a)
(b)
(c)
(d)
Q-10) Two spheres A and B of exactly same mass are given equal positive and negative charges respectively. Their masses after charging
(a)
(b)
(c)
(d)
A loses electrons and B gains electrons. Therefore, mass of A < mass of B.