Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion (A) : Permanent hardness of water is removed by treatment with washing soda.
Reason (R) : Washing soda reacts with soluble magnesium and calcium sulphate to form insoluble carbonates.
Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion: The mass number of hydrogen is equal to its atomic number
Reason: H− atom has no neutrons.
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Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion (A) : Some metals like platinum and palladium, can be used as storage media for hydrogen.
Reason (R) : Platinum and palladium can absorb large volumes of hydrogen.
Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion: D2O is called heavy water.
Reason : Its degree of dissociation is high.
Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion : H2O2 has higher boiling point than water.
Reason : The dipole moment of H2O2 is little more than that of H2O.
Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion : Beryllium hydride is a covalent hydride.
Reason : The electronegativity difference between Be and H is very high.
Direction: In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the options given below each question.
Assertion : The O-O bond length of H2O2 is shorter than that of O2F2.
Reason : H2O2 is an ionic compound.
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