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Take online objective part MCQS test for all Boards. The test consists of 30 questions
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QUESTION # 1The following statement contained in a student's laboratory report is a conclusion:
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QUESTION # 2All of the following statements are incorrect for 20 mol of hydrogen
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QUESTION # 3The word mole was first introduced by
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QUESTION # 4The relative atomic mass of chlorine is 35.5. What is the mass of 2 moles of chlorine gas?
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QUESTION # 5Which of the following process is used to separate insoluble particles from liquids?
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QUESTION # 66g of hydrogen gas is:
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QUESTION # 7The mass of sulphur which combines with 24 grams oxygen to form SO2
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QUESTION # 8When nitrogen is 5.6 grams in NO2, then number of moles of NO2is
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QUESTION # 9Two elements X (atomic mass = 50) and Y ( atomic mass = 16) combine to give a compound having 32% Y. The formula of the compounds is
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QUESTION # 10An atom is:
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QUESTION # 11If 5.85 g of Nacl are dissolved in 90g of water,the mole fraction of Nacl is?
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QUESTION # 12The number of moles of C02 which contain 8g of Oxygen?
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QUESTION # 13The volume occupied by one mole of an ideal gas at standard temperature and pressure is called
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QUESTION # 14The relative abundance of the ion with a definite m/e value is measured by:
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QUESTION # 15Who determined atomic masses of elements?
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QUESTION # 16Basic principle of crystallizations is that solute Should be dissolved in a solvent at
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QUESTION # 17Mass spectrometer measures the
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QUESTION # 18The insoluble impurities in the saturated solution are removed by
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QUESTION # 19What is the correct relationship between empirical and molecular formulas?
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QUESTION # 20In filtration process which apparatus is used to avoid the premature crystallization of solute
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QUESTION # 21The mass of 2 moles of sodium hydroxide will be
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QUESTION # 220.1 molar glucose (C6H12O6) solution has the % W/V
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QUESTION # 23Isotopes differ in:
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QUESTION # 24Matter is defined as anything which occupies space and:
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QUESTION # 25Isotopes differ in the:
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QUESTION # 26A piece of paper is burnt in air, the gas produced is passed through distilled water. The pH of water will be
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QUESTION # 27The isotopes 8O16, Mg24 , Si28 , Ca40, Fe56 from nearly _____ of earth crust
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QUESTION # 28"A" compound always consists of the same elements combined in the same fixed ratio."The statement is"
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QUESTION # 29Molecular ions are generated with high energy ____
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QUESTION # 30Which if the following is not a separation technique?
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The average score is 21%
1. Fundamental Concepts
2.States of Matter