SSC-CGL 1st July 2012 (Morning Shift) Solution GK

21. Which of the following was not known during the Rigvedic period?
[A]Varna system (Caste)
[B]Marriage system
[C]Joint family system
[D]Agriculture

Varna system (Caste)

22. Match the following:
Match the following:
Dynasty Founder
A. Pallavas 1. Dantidurg
B. Chalukyus 2. Vishnuvardhan
C. Rashtrakutas 3. Simhavishnu
D. Hoysalas 4. Pulakesin I
A. B. C. D.
[A]1 4 2 3
[B]4 3 2 1
[C]2 1 4 3
[D]3 4 1 2

3 4 1 2

23. Abul Fazl wrote
[A]Akbar-Nama
[B]Alamgir-Nama
[C]Babar-Nama
[D]Humayun-Nama

Akbar-Nama

24. Which data communication method is used for sending data in both directions at the same time?
[A]Half duplex
[B]Full duplex
[C]Super duplex
[D]Simplex

Full duplex

25. What does the acronym ISDN stands for?
[A]Intelligent Services Digital Network
[B]Integrated Services Data Network
[C]Indian Standard Digital Network
[D]Integrated Services Digital Network

Integrated Services Digital Network

26. Darkening property of photochromatic glass is due to presence of
[A]silver nitrate
[B]silver chloride
[C]silver bromide
[D]silver oxide

silver chloride

27. Supersonic aircrafts discharge the following substances into the stratosphere:
[A]CO2
[B]H2
[C]NOx
[D]Sox

Nox

28. Chemical nature of laughing gas is:
[A]Nitrous oxide
[B]Sulphur dioxide
[C]Nitric oxide
[D]Hydrogen chloride

Nitrous oxide

29. The difference between isotopes of an element is due to the presence of a different number of
[A]electrons
[B]photons
[C]protons
[D]neutrons

neutrons

30. The increasing abundance of greenhouse gases in the atmosphere has led to the following effects except:
[A]Oxygen fertilization effect
[B]Carbon dioxide fertilization effect
[C]Global warming
[D]Depletion of Ozone layer in the stratosphere

Oxygen fertilization effect

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