Which lens is used for long-sightedness?
A. diverging
B. Convex
C. Concave
D. none of these
The substance is present abundantly in the universe?
A. Carbon Dioxide
B. Hydrogen
C. Oxygen
D. Silicon
Actual colors of white light through the prism are?
A. 7
B. 6
C. 5
D. 8
The orbits of comets are _______?
A. Circular
B. Highly elliptical
C. Elliptical
D. Parabolic
How many planets can be seen through the naked eye?
A. 5
B. 4
C. 3
D. 6
In the field of meteorology, we study?
A. Air and sounds
B. Atmosphere
C. Seasons
D. Winds and clouds
The speed of wind can be measured by_____.
A. Hydrometer
B. Barometer
C. Anemometer
D. Hygrometer
Which instrument is used to convert AC to DC?
A. Galvanometer
B. Battery
C. Anemometer
D. Rectifier
The category of humming bird is_____?
A. Exotherm
B. Endotherm
C. Ectotherm
D. Heterotherm.
Which blood group is the universal acceptor?
A. AB+
B. B+
C. A+
D. O+