Q1. Sound above what level (in decibel) is considered hazardous noise pollution ?
(a) 30 dB
(b) 40 dB
(c) 60 dB
(d) 80 dB
Q2. Which one of the following metals occurs in nature in free state?
(a) Gold
(b) Sodium
(c) Aluminium
(d) Copper
Q3. Species containing same number of electrons are called—
(a) isotopes
(b) isobars
(c) isoelectronic
(d) isotones
Q4. Baby Blue Syndrome is because of:
(a) Phasphate
(b) Sulphate
(c) Carbonate
(d) Nitrate
Q5. A student finds the writing on the black board as blurred and unclear when sitting on the last desk in a classroom. However, he sees it clearly when sitting on the front desk. Student suffers from a vision defect known as—
(a) hypermetropia
(b) myopia
(c) presbyopia
(d) astigmatism
Q6. When the concentration of water and solutes on either side of the cell membrane is same, the solution is said to be—
(a) hypertonic
(b) isotonic
(c) isotrons
(d) None of these
Q7. Richter scale is used for measuring—
(a) velocity of sound
(b) intensity of light
(c) amplitude of seismic waves
(d) intensity of sound
Q8. A characteristic odour of garlic is due to—
(a) a chloro compound
(b) a fluarine compound
(c) a sulphur compound
(d) acetic acid
Q9. Domestic electrical wiring is basically a—
(a) series connection
(b) parallel connection
(c) combination of series and parallel connections
(d) series connection within each room and parallel connection elsewhere
Q10. One feels heavier in a lift when the lift—
(a) is going down steadily
(b) just begins to go up
(c) is moving up steadily
(d) descends freely
Solutions
1.D
2.A
3.C
4.D
5.B
6.B
7.C
8.C
9.B
10.B
