(a) Egrograph
(b) Ediograph
(c) Seismograph
(d) None of theses
Q2. Full form of CFL used in place of electric bulbs is.
(a) Compact fluorescent lamp
(b) Constantan filament lamp
(c) Closed filament lamp
(d) closed fluorescent lamp
Q3. A light year is a measure of:
(a) Speed
(b) Velocity
(c) Distance
(d) Time
(a) Clarity
(b) Colour
(c) Resolution
(d) Graphics
Q5. The radiation initially produced in fluorescent tube is
(a) infrared
(b) ultraviolet
(c) microwaves
(d) X-rays
Q6. These waves cannot be transmitted through vacuum
(a) Light
(b) Sound
(c) Heat
(d) Electromagnetic
Q7. Red light is used for signals because it has
(a) long wavelength
(b) high intensity
(c) high frequency
(d) low refraction in the medium
Q8.A device which is used to limit the current in an electrical circuit is called a
(a)Grid
(b)Fuse
(c)Hub
(d)Conductor
Q9. Which of the following liquids is most viscous?
(a) Oil
(b) Milk
(d) Petrol
Q10. Radio activity is due to
(a) unstable nucleus
(b) stable nucleus
(c) stable electronic configuration
(d) None of these
Q11. A drop of liquid assumes spherical shape because:
(a) Intermolecular forces are strong in liquids
(b) A sphere has the least surface area for a given volume
(c) A sphere has the largest surface area for a given volume
(d) Inter molecular forces are weak in liquids
Q12. If cream is removed from milk, its density
(a) Increases
(b) Decreases
(c) Remains the same
(d) May increase or decrease
Q13. Which electromagnetic radiation is used for satellite communication?
(a) Ultraviolet
(b) Infrared
(c) Microwave
(d) Millimeter wave
(a) 0.1 mm
(b) 0.01 mm
(c) 0.001 mm
(d) 0.0001 mm
Q15.Small bubbles are perfectly spherical because of
(a)Gravity
(b)Pressure
(c)Viscosity
(d)Surface tension
