Science (Mixed) Quiz Based on NCERT for SSC 2016 Quiz

                                

1. A piece of glass is heated to high temperature and then allowed to cool. If it cracks, a possible reason for this is the following property of glass—
(a) Low thermal conductivity 
(b) High thermal conductivity 
(c) High specific heat 
(d) Low specific heat
2. The thermal conductivity of a plate depends on—
(a) The temperature difference between the two sides 
(b) The thickness of the plate 
(c) The area of the plate 
(d) None of these above 
3. It is hotter for the same distance over the top of a flame than it is on lower side of it because—
(a) More heat is radiated upwards 
(b) Air conducts more heat upwards 
(c) Convection takes heat upward 
(d) Of some reason other than the above three 
4. A device used for the measurement of radioactivity is – 
(a)Mass spectrometer 
(b) Cyclotron 
(c) Nuclear reactor 
(d) G.M. Counter
5. Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?
(a) Microscope 
(b) Lead plate 
(c) Scintillation counter 
(d) Spectrophotometer 
6. Which one of the following elements is essential for construction in nuclear reactors?
(a) Cobalt 
(b) Nickel 
(c) Zirconium 
(d) Tungsten 
7. When chlorophyll absorbs light, it gets excited and emits – 
(a) Oxygen 
(b) Water 
(c) Electrons 
(d) Energy rich compound 
8. Chlorophyll is present – 
(a) On the surface of chloroplast 
(b) Dispersed throughout chloroplast 
(c) In the stroma of chloroplast 
(d) In the grana of chloroplast 
9. The process in which water is split during photosynthesis is – 
(a) Photolysis 
(b) Hydrolysis 
(c) Plasmolysis
(d) Hemolysis 
10. Which gas in essential for photosynthesis –
(a) O2

(b) CO2

(c) N2
(d) CO
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