| Sr No |
Question |
Answer |
Remarks |
| 1 |
The chemical symbol of commonly known product lime is |
CaO |
CaCO₃ is called lime stone and when heated releases CO₂ and CaO called lime. The reaction is called endothermic as it absorbs heat energy |
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| 2 |
The chemical name of baking soda used in the kitchen during frying of cooking items is |
NaHCO₃ |
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| 3 |
Plaster of Paris when mixed with water gives |
Gypsum |
Plaster of Paris in dry form is CaSO₄.½H₂O and when mixed water it makes gypsum CaSO₄.2H₂O which is dry. Plaster of Paris is used for support fractured bones. |
|
| 4 |
Calcination is a process used in extraction of metal from its ore in which |
ore is heated strongly in the presence of limited air |
The process of calcination is used for extracting metals which are middle in the activity series. It required strong heating with excess air for roasting and limited air for calcination. |
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| 5 |
Stainless steel is an alloy of Iron with |
Nickel and Chromium |
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| 6 |
Carbon compounds with same molecular formula but different strucutres are called |
structural isomars |
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| 7 |
How Mendeleev predicted existing of elements which were not discovered by that time |
gaps in the periodical table |
Option 3 is very well known answer but ‘all’ is a major distractor to confuse the candidate. |
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| 8 |
The brain is responsible for |
all |
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| 9 |
The pressure in arteries is ———–than in veins. |
greater |
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| 10 |
The basic function of blood is not to transport |
All |
Besides these the other function of blood is to perform the task of delivering the nutrients and glucose generated by the organs of the digestive system to the other parts of the body including the liver. It is the function of blood to first take the oxygen processed by the lungs to all the cells of the body and then to collect the carbon dioxide from the cells and deliver it to the lungs. |
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| 11 |
Hemodialysis is an artifician process to perform the function of vital organ |
kidney |
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| 12 |
Spherical mirrors having reflecting surface curved inwards is called |
concave mirror |
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| 13 |
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object? |
between p and f |
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| 14 |
Formation of rainbow is result of following phenomenon taking place on water droplet one after another |
refraction, dispersion, internal reflection, refraction |
The tiny water droplets existing in the atmosphere first refracts the light and than disperse. The disperse light undergoes total internal reflection and refracts back to air. |
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| 15 |
How much sun energy is used by plants to to make food through the process of photo-synthesis? |
0.01 |
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| 16 |
Copnduction of any wire depends directly on the |
area of crossection and inversely on length |
Always remember conductance is inverse of resistance. |
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| 17 |
The relation for resistive heating is given by |
All |
These are different way writing the joules law of heating using ohms law. Always be careful, All is most of the time a correct answer, but a major distractor also. By inserting one wrong option and another All, there is possibility of you clicking All. |
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| 18 |
Split rings are used in a electric motor |
to connect positive and negative terminal of power supply |
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| 19 |
This is a limitation for planning a hydro power generating plant |
environment |
Hydro power is much less running cost but higher capital cost but overall benefit. It is thus economical but for environmental issues has to be handled very carefully. |
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| 20 |
This is an advantage of solar power plant |
it does not require back up facility |
It does not have rotating parts as required in wind, biomass and hydro. Solar cells are placed on the panel and all cells receives energy and does not require focussing arrangement. It is a stand-alone system but requires back up to take care when sun is under shadow or not there at all. |
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| 21 |
For electrolytic refining of metals, the impure metal is used |
anode |
Anode is made of impure metal. It looses pure metal and impurities into the electrolyte. The pure metal deposited on the cathode and the impurities either get dissolved in the electrolyte or settles down. |
|
Respected Sir,
I am Mithun Sarkar. I have done B.Tech in Electronics . I have applied CENTRALISED EMPLOYMENT NOTICE No.02/2014 for the post of JE and SSE. I have done B.Tech.am I eligible for JE post. Because some candidate are saying B.Tech is not eligible for JE.Please help me sir.