Multiple Choice Question on Basic Concept of Science Class X Standard Practice Test 6
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This is a mock drill question bank on Basic Concept of Science of Class X standard for those appearing in JE RRB examination. The question bank consists of 21 questions with clock set for 20 minutes. After you finish the test, press Quiz Finish and you will get the answer sheet, your result and its comparison with others. You will also be given remarks containing the explanation about the answer and also about the distracters (other options) to build confidence on the subject. You will also learn techniques to handle distractors because it is known only to person who has the experience of constructing multiple choice questions.
Always remember that the Mock Drill is to understand how your brain works in handling different pressure and the way distractors are constructed.Use these learning to correct your approach.
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The Answer Key:
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 2 The chemical name of baking soda used in the kitchen during frying of cooking items is NaHCO₃ 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. 5 Stainless steel is an alloy of Iron with Nickel and Chromium 6 Carbon compounds with same molecular formula but different strucutres are called structural isomars 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. 8 The brain is responsible for all 9 The pressure in arteries is ———–than in veins. greater 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. 11 Hemodialysis is an artifician process to perform the function of vital organ kidney 12 Spherical mirrors having reflecting surface curved inwards is called concave mirror 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 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. 15 How much sun energy is used by plants to to make food through the process of photo-synthesis? 0.01 16 Copnduction of any wire depends directly on the area of crossection and inversely on length Always remember conductance is inverse of resistance. 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. 18 Split rings are used in a electric motor to connect positive and negative terminal of power supply 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. 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. 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. -
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Question 1 of 21
1. Question
The chemical symbol of commonly known product lime is
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Question 2 of 21
2. Question
The chemical name of baking soda used in the kitchen during frying of cooking items is
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Question 3 of 21
3. Question
Plaster of Paris when mixed with water gives
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Question 4 of 21
4. Question
Calcination is a process used in extraction of metal from its ore in which
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Question 5 of 21
5. Question
Stainless steel is an alloy of Iron with
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Question 6 of 21
6. Question
Carbon compounds with same molecular formula but different strucutres are called
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Question 7 of 21
7. Question
How Mendeleev predicted existing of elements which were not discovered by that time
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Question 8 of 21
8. Question
The brain is responsible for
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Question 9 of 21
9. Question
The pressure in arteries is ———–than in veins.
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Question 10 of 21
10. Question
The basic function of blood is to transport
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Question 11 of 21
11. Question
Hemodialysis is an artifician process to perform the function of vital organ
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Question 12 of 21
12. Question
Spherical mirrors having reflecting surface curved inwards is called
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Question 13 of 21
13. Question
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?
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Question 14 of 21
14. Question
Formation of rainbow is result of following phenomenon taking place on water droplet one after another
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Question 15 of 21
15. Question
How much sun energy is used by plants to to make food through the process of photo-synthesis?
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Question 16 of 21
16. Question
Copnduction of any wire depends directly on the
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Question 17 of 21
17. Question
The relation for resistive heating is given by
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Question 18 of 21
18. Question
Split rings are used in a electric motor
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Question 19 of 21
19. Question
This is a limitation for planning a hydro power generating plant
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Question 20 of 21
20. Question
This is an advantage of solar power plant
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Question 21 of 21
21. Question
For electrolytic refining of metals, the impure metal is used
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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.