Multiple Choice Question on Basic Concept of Science Class X Standard Practice Test 5
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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 Decomposition reaction is such in which single reactant breaks down to two or more simple products 2 Common name of CaOCl₂ is bleaching powder Bleaching powder is made using Calcium Hydroxide and chlorine resulting bleaching powder and water. 3 What is required by human body to get rid of pain due to high acidity? Magnesium Hydroxide Milk of magnesia is generally used to treat high acidity in the stomach. 4 The reagent used to dissolve gold and platinum is Aqua regia Aqua regia is a freshly prepared mixture of concentrated HCl and H₂NO₃. It can dissolve Gold and Platinum but none alone 5 Condition for rusting of ferrous material is the existing of moist air Rusting takes place when air and water both attacks together the ferrous surface. 6 The property of carbon to form bonds with other atom of carbon is called catenation Petanation and tetanation are not any property and options are only distractors. Tetravelency is a property 7 Which elements were selected by Mendeleev for studying the chemical property for finding the position in the periodical table? Oxygen and Hydrogen Oxygen and Hydrogen are very reactive and forms oxide and hydride with each elements easily. 8 Which of the statement is not correct when going from left to right across the periods of periodic table? the atoms lose their electrons more easily The number of electron keep on increasing as we go from left to right on a period. 9 Name the constituent which is not a part of the photosynthesis process oxygen The constituents are CO₂. Water, Chlorophyll and sunlight which makes carbohydrates providing energy to the plant. 10 Terrestrial animals are those which lives on land 11 The role of kidney in a human body is to remove nitrogenous products from blood Function of kidney is remove waste products from blood on lines similar to as CO₂ removed by lungs. 12 Image formed by a plane mirror is always virtual and erect 13 Power of a lens is given as 1/f Power of a lens is given in dioptre and given as f because when combining two lenses it can be added as a normal sum. 14 During dispersion of light through a prism, which light bends the least red Red light bends the least and violet the maximum 15 Depletion of ozone layer at higher layer of atmosphere is a consequential effect of release of chlorofluoro carbons into the environment Ozone is a molecule of three atoms of oxygen with chemical formula of O₃ and formed in the higher level atmosphere by breaking oxygen molecule into oxygen atoms which combine with oxygen molecule to form ozone. This ozone protects UV radiation passing to earth which causes skin cancer. 16 Resistance of any wire depends directly on the length and inversely on the area of corssection Always remember the formula R=ρ*l/A and be careful about the distractors. The purpose of distractor is distract you from the correct answer and make you commit mistakes 17 Four resistances of value 1.5 ohms, 1.5×10² ohms, 2.6×10⁶ ohms and 1.7×10⁸ are connected in parallel, the net resistance will be 1.49 ohms Never attempt to such a long calculation in multiple choice questions and use logic. The resistance will always be slightly lower than 1.5 ohms and cannot be greater than 1.5 ohms. 18 Fleming’s left hand rule is used to find out the direction of direction of force produce on a current carrying conductor Fleming’s left hand rule is find out the force where as right hand rule is for generated current. In LHR, thumb points towards motion when first and middle finger points towards field and current which are 90 degree to each other. 19 This is not a renewable source of energy? Nuclear Renewable source of energy is one which keeps on renewing at a short cycle whereas non-renewable source of energy is renewable with a time period of 1000 to million years. 20 This is not a limitation while planning a wind power house to augment the power need of an establishment back up facility Wind farm is not a stand-alone system and requires a back up when generation is not enough. But in case of need of augmentation of power generation, some source is already available. 21 Purity of Gold is defined in carat and 24 carat is the purest form. 22 Carrot gold will be Purity of Gold is defined in carat and 24 carat is the purest form. 22 Carrot gold will be Along with what is mentioned, chrome plating, galvanising, tinning are also used for this purpose. -
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Question 1 of 21
1. Question
Decomposition reaction is such in which
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Question 2 of 21
2. Question
Common name of CaOCl₂ is
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Question 3 of 21
3. Question
What is required by human body to get rid of pain due to high acidity?
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Question 4 of 21
4. Question
The reagent used to dissolve gold and platinum is
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Question 5 of 21
5. Question
Condition for rusting of ferrous material is the existing of
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Question 6 of 21
6. Question
The property of carbon to form bonds with other atom of carbon is called
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Question 7 of 21
7. Question
Which elements were selected by Mendeleev for studying the chemical property for finding the position in the periodical table?
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Question 8 of 21
8. Question
Which of the statement is not correct when going from left to right across the periods of periodic table?
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Question 9 of 21
9. Question
Name the constituent which is not a part of the photosynthesis process
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Question 10 of 21
10. Question
Terrestrial animals are those which lives on
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Question 11 of 21
11. Question
The role of kidney in a human body is to
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Question 12 of 21
12. Question
Image formed by a plane mirror is always
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Question 13 of 21
13. Question
Power of a lens is given as
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Question 14 of 21
14. Question
During dispersion of light through a prism, which light bends the least
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Question 15 of 21
15. Question
Depletion of ozone layer at higher layer of atmosphere is a consequential effect of
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Question 16 of 21
16. Question
Resistance of any wire depends directly on the
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Question 17 of 21
17. Question
Four resistances of value 1.5 ohms, 1.5×10² ohms, 2.6×10⁶ ohms and 1.7×10⁸ are connected in parallel, the net resistance will be
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Question 18 of 21
18. Question
Fleming’s left hand rule is used to find out the direction of
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Question 19 of 21
19. Question
This is not a renewable source of energy?
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Question 20 of 21
20. Question
This is not a limitation while planning a wind power house to augment the power need of an establishment
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Question 21 of 21
21. Question
Which of the following is generally used for coating on the kitchen utensils used for cooking
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