21. When several resistors of different values are combined in parallel and connected across a battery, then the current flowing in different resistors and potential difference across their ends,
(A) will be different for different resistors,
(B) the value of current will be different but potential difference will be same for all the resistors.
(C) the value of current will be same but potential difference will be different across different resistors.
(D) will be the same for all the resistors.
22. The essential difference generator and a DC generator is that
(A) AC generator has an electromagnet while DC generator has permanent magnet.
(B) AC generator has slip rings while DC generator has a commutator.
(C) AC generator generates a higher voltage,
(D) DC generator generates a higher voltage.
23. In an a.c. electric motor, the direction of current in the coil changes once in every:
(A) two rotations of the coil
(B) one-fourth rotation of the coil
(C) half rotation of the coil
(D) one rotation of the coil
24. The phenomenon in which changing magnetic field in a conductor produces induced current induced current in another conductor is called :
(A) magnetic effect
(B) electromagnetic induction
(C) thermoelectric effect
(D) electric effect
25. Dry cell is a type of :
(A) primary cell
(B) nickel-iron cell
(C) lead-acid cell
(D) secondary cell
26. Charge on an electron is
(A) + 1.6 x 10-19 Coulomb / कुलाम
(B) – 1.9 x 10-16 Coulomb / कूलाम
(C) + 1.9 x 10-16 Coulomb / कूलाम
(D) – 1.6 x 10-19 Coulomb / कुलाम
27. For using a convex lens as magnifying lens (magnifying glass), where should the object be placed ?
(A) At the principal focus
(B) Any where
(C) At f/2 (where f = focal length of the lens)
(D) Near to the lens
28. Which of the following colours suffers maximum deviation in a prism?
(A) Yellow
(B) Orange
(C) Green
(D) Blue
29. Which one is not a database management Software ?
(A) Oracle
(B) MS Access
(C) MySQL
(D) Drupal
30. _______ is a global address used to locate resources on the internet.
(A) HTTP
(B) XML
(C) HTML
(D) URL
31. __ ports are also known as COM port.
(A) Parallel
(B) RJ-11
(C) RJ-45
(D) Serial
32. The first Indian web browser developed for Indian users –
(A) Google Chrome
(B) Epic
(C) Intermet Explorer
(D) Mozilla
33. _____ is known as father of Indian space programme.
(A) Rama K. Sarabhai
(B) G. Madhavan Nair
(C) Krishnaswamy Ranga
(D) Vikram Ambalal Sarabhai
34. Full form of GAGAN (a satellite of ISRO) is –
(A) GIS Aided Geo Augmented News
(B) GPS Aided Geo Augmented Navigation
(C) GPS Aided Geo Augmented Network
(D) GIS Aided Geo Navigation Augmented
35. ____ is a low earth orbit satellite constellation for satellite phone and low speed data communications.
(A) Globalstar
(B) Leosat
(C) Bridgeway
(D) Meridian
36. IRS series satellite are used for .
(A) Forestry
(B) Astronomy
(C) Remote Sensing
(D) Education
37. The two chains of a DNA molecule are bound by their nitrogenous bases to each other by a ____ bond.
(A) lonic
(B) Hydrogen
(C) Sulphide
(D) Covalent
38. The branch of science which deals with the environment is called
(A) Taxonomy
(B) Morphology
(C) Genetics
(D) Ecology
39.Deficiency of Red Blood Cells in the body is known as –
(A) Glycemia
(B) Thrombocytopenia
(C) Anemia
(D) Lipidemia
40. Watson and Crick proposed the model of DNA in-
(A) 1953
(B) 1959
(C) 1973
(D) 1963
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