Multiple Choice Question on Basic Concept of Science Class X Standard Practice Test 3
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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 Respiration is an exothermic process 2 Silver chloride turning into grey substance in sunlight is called endothermic reaction When it is mentioned sunlight, means it is endothermic reaction. 3 Rain water is called acid rain when its pH is less than 5.6 Pollutant gases like carbon dioxide and Sulphur dioxide mix with rain to make it acidic and if the pH is less than 5.6, than it is called acid rain. 4 Anodising is a process during which a thick layer of aluminium oxide is formed on Al to protect it from oxidation 5 Silver article becomes black when exposed in air due to formation of Silver Sulphide 6 Unsaturated hydrocarbons with one or more triple bonds is called alkynes 7 The formula is of functional group carboxylic acid 8 Metalloids are elements which exists in semi-metal state There are 18 groups and 7 periods in a periodic table. The elements on the left are metals, in between like Si, Ge, B, As etc are metalloids and extreme right are gases or non-metals. 9 Life process is defined as a process in which the All 10 What is the function of mucus in stomach? to protect the inner lining of the stomach from the action of acids The air passage to lungs is also protected by mucus lining 11 How many chambers are there in the heart of fish? two the blood is pumped through two chamber heart to gills, get oxygenated and than directly passes to rest of the body 12 Which of the following is a plant hormone? cytokinin 13 A concave mirror produces a highly enlarged and real image. Where is the object located at F 14 The middle colour of the seven colour spectrum is green Remember VIBGOYR for the seven colours and Green is the middle colour. 15 The least distance of distinct vision for a young adult with normal vision is about 25 cm 16 What is the approximate range of speed of charge in a conductor when current is flowing through it? 1mm/sec Drift velocity is very small but the effect of voltage is at the speed of electro-magnetic wave travelling through the conductor near to the speed of light. 17 The resistivity of an alloy is ————as compared to parent metals more The resistivity of conductors is of the order of 10⁻⁸ where as alloy of these material is in the range of 10⁻⁶ ohm-m. 18 A current is flowing through a conductor from bottom to top, the magnetic field will be anti-clock wise in vertical plane Use RH rule; where thumb shall position in the direction of the flow of current, than the direction of fingers will give the direction of the magnetic field. 19 Why there is a energy crisis when it can neither be created nor destroyed? energy is available in usable and non-usable form and the crisis is of usable form 20 Anaerobic micro-organisms which breaks down complex compound of cow-dung slurry does not require oxygen Anaerobic process does not require oxygen 21 Biodegradable substances are those which are all Biological process are natural process. The non- biodegradable items can be broken under the influence of high temperature and pressure. -
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Question 1 of 21
1. Question
The formula
is of functional group -
Question 2 of 21
2. Question
Anodising is a process during which
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Question 3 of 21
3. Question
Respiration is an
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Question 4 of 21
4. Question
Silver chloride turning into grey substance in sunlight is called
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Question 5 of 21
5. Question
Rain water is called acid rain when its pH is
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Question 6 of 21
6. Question
Silver article becomes black when exposed in air due to formation of
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Question 7 of 21
7. Question
Unsaturated hydrocarbons with one or more triple bonds is called
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Question 8 of 21
8. Question
Metalloids are elements which
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Question 9 of 21
9. Question
Life process is defined as a process in which the
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Question 10 of 21
10. Question
What is the function of mucus in stomach?
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Question 11 of 21
11. Question
How many chambers are there in the heart of fish?
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Question 12 of 21
12. Question
Which of the following is a plant hormone?
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Question 13 of 21
13. Question
A concave mirror produces a highly enlarged and real image. Where is the object located
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Question 14 of 21
14. Question
The middle colour of the seven colour spectrum is
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Question 15 of 21
15. Question
The least distance of distinct vision for a young adult with normal vision is about
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Question 16 of 21
16. Question
What is the approximate range of speed of charge in a conductor when current is flowing through it?
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Question 17 of 21
17. Question
The resistivity of an alloy is ————as compared to parent metals
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Question 18 of 21
18. Question
A current is flowing through a conductor from bottom to top, the magnetic field will be
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Question 19 of 21
19. Question
Why there is a energy crisis when it can neither be created nor destroyed?
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Question 20 of 21
20. Question
Anaerobic micro-organisms which breaks down complex compound of cow-dung slurry
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Question 21 of 21
21. Question
Biodegradable substances are those which are
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