General Science Practice Question and Answer

Q:

In which year did Rudolf Virchow published an essay titled ‘Cellular Pathology’ in which he famously declared that "every cell arises from another cell”?

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    1865
    Correct
    Wrong
  • 2
    1835
    Correct
    Wrong
  • 3
    1845
    Correct
    Wrong
  • 4
    1855
    Correct
    Wrong
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Answer : 4. "1855"
Explanation :

n 1855, at the age of 34, he published his now famous aphorism “omnis cellula e cellula” (“every cell stems from another cell”). With this approach Virchow launched the field of cellular pathology. He stated that all diseases involve changes in normal cells, that is, all pathology ultimately is cellular pathology.

Q:

In the format of the IUPAC name of the organic compound, the term ‘Root’ is used to represent:

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    the number of carbon atoms in the parent chain
    Correct
    Wrong
  • 2
    the presence of side chains or substituent groups
    Correct
    Wrong
  • 3
    functional groups that may be present in the compound
    Correct
    Wrong
  • 4
    the cyclic or acyclic nature of the given compound
    Correct
    Wrong
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Answer : 1. "the number of carbon atoms in the parent chain"
Explanation :

The Word root indicates the total number of carbon atoms present in the longest carbon chain belonging to the compound For example, 'Meth' refers to a chain with 1 carbon atom and 'Pent' refers to a chain with 5 carbon atoms. metalloid in dictionary chemical name is Naoh. Nylon properties: Atomic number of iodine. Dobereiner Traids an Atomic compound.

Q:

By what metabolic process in the kitchen can you make food like curd, paneer and sauerkraut?

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    Pasteurisation
    Correct
    Wrong
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    Fermentation
    Correct
    Wrong
  • 3
    Condensation
    Correct
    Wrong
  • 4
    Steaming
    Correct
    Wrong
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Answer : 2. "Fermentation"
Explanation :

Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. In biochemistry, it is narrowly defined as the extraction of energy from carbohydrates in the absence of oxygen.

Q:

In 1928, who discovered that when a ray of coloured light enters a liquid, a fraction of the light scattered by that liquid is of a different colour?

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  • 1
    SN Bose
    Correct
    Wrong
  • 2
    Lord Rayleigh
    Correct
    Wrong
  • 3
    CV Raman
    Correct
    Wrong
  • 4
    John Tyndall
    Correct
    Wrong
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Answer : 3. "CV Raman"
Explanation :

Sir Chandrasekhara Venkata Raman, discovered on 28 February 1928, that when a beam of coloured light entered a liquid, a fraction of the light scattered was of a different color, dependent on material property. This radiation effect of molecular scattering of light bears the name of ‘Raman Effect’, from which many applications in photonic communications and spectroscopy evolved. The Raman Effect is the process of scattering light particles by molecules of a medium.

Q:

A geostationary satellite revolves round the Earth from– 

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    East to West
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    West to East
    Correct
    Wrong
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    North to South
    Correct
    Wrong
  • 4
    South to North
    Correct
    Wrong
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Answer : 2. "West to East "
Explanation :

Geostationary satellites are located exactly above the Earth’s equator and revolves around the Earth in a circular orbit. Their revolving speed and direction (West to East) are exactly same as that of the Earth, which makes it look stationary from the Earth’s surface.

Q:

ISRO launched the world’s first satellite dedicated to education, the EDUSAT in the month of– 

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    June, 2004
    Correct
    Wrong
  • 2
    July, 2004
    Correct
    Wrong
  • 3
    August, 2004
    Correct
    Wrong
  • 4
    September, 2004
    Correct
    Wrong
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Answer : 4. "September, 2004 "
Explanation :

EDUSAT or GSAT-3 is a communications satellite which was launched on 20th September, 2004 by the Indian Space Research Organisation. EDUSAT is the first Indian satellite built exclusively to serve the educational sector. It has revolutionised classroom teaching through IP based technology

Q:

‘PCB’ stands for– 

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    Programme Control Block
    Correct
    Wrong
  • 2
    Process Control Block
    Correct
    Wrong
  • 3
    Process Communication Block
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "Process Control Block "
Explanation :

Process Control Block (PCB, also called Task Controlling Block, Task Structure or Switchframe) is a data structure in the Operating System kernel containing the information needed to manage a particular process.The PCB is the manifestation of a process in an Operating System.

Q:

The National Chemical Laboratory is situated in– 

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  • 1
    New Delhi
    Correct
    Wrong
  • 2
    Bengaluru
    Correct
    Wrong
  • 3
    Pune
    Correct
    Wrong
  • 4
    Patna
    Correct
    Wrong
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Answer : 3. "Pune "
Explanation :

The National Chemical Laboratory (NCL) is an ~ Indian Government laboratory based in Pune, popularly known as NCL, a constituent member of the Council of Scientific and Industrial Research (CSIR) India, it was established in 1950

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