Question

determine the amount of work done when an object is displaced at an angle of 30° with respect to the direction of the applied force?​

Answer 1

Explanation:

magnesium ribbon is burnt in oxygen to give a white compound ‘X’ accompanied by emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound ‘Y’. Write a balanced chemical equation when ‘X’ is dissolved in water.

A. 2 Mg + O2→2MgO

B. 3 Mg + N2→Mg3N2

C. MgO + H2O→Mg(OH)2

D. Mg + H2O→Mg(OH)2

Answer 2

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