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.
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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.
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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
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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
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25. Dry cell is a type of :
(A) primary cell
(B) nickel-iron cell
(C) lead-acid cell
(D) secondary cell
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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
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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
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28. Which of the following colours suffers maximum deviation in a prism?
(A) Yellow
(B) Orange
(C) Green
(D) Blue
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29. Which one is not a database management Software ?
(A) Oracle
(B) MS Access
(C) MySQL
(D) Drupal
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30. _______ is a global address used to locate resources on the internet.
(A) HTTP
(B) XML
(C) HTML
(D) URL
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31. __ ports are also known as COM port.
(A) Parallel
(B) RJ-11
(C) RJ-45
(D) Serial
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32. The first Indian web browser developed for Indian users –
(A) Google Chrome
(B) Epic
(C) Intermet Explorer
(D) Mozilla
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33. _____ is known as father of Indian space programme.
(A) Rama K. Sarabhai
(B) G. Madhavan Nair
(C) Krishnaswamy Ranga
(D) Vikram Ambalal Sarabhai
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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
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35. ____ is a low earth orbit satellite constellation for satellite phone and low speed data communications.
(A) Globalstar
(B) Leosat
(C) Bridgeway
(D) Meridian
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36. IRS series satellite are used for .
(A) Forestry
(B) Astronomy
(C) Remote Sensing
(D) Education
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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
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38. The branch of science which deals with the environment is called
(A) Taxonomy
(B) Morphology
(C) Genetics
(D) Ecology
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39.Deficiency of Red Blood Cells in the body is known as –
(A) Glycemia
(B) Thrombocytopenia
(C) Anemia
(D) Lipidemia
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40. Watson and Crick proposed the model of DNA in-
(A) 1953
(B) 1959
(C) 1973
(D) 1963
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