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I. x2 – 13x + 40 = 0 Pairs are (-5 and -8) Values after changing sign = 5,8 II. 2y2 – 15y + 13 = 0 Pairs are = -2,-13 Values after changing sign = 2, 13 and divide by 2 = (1,6.5) Hence, relationship between x and y cannot be established.
In the synthesis of aspirin (acetylsalicylic acid) from salicylic acid, which reagent is used?
What is the chemical name of baking soda?
The product of the equivalent weight and valency of an element equals its ______.
What is the equilibrium distance for Hydrogen atoms?
Plants absorb dissolved nitrates from soil and convert them into
The Polymerisation of which of the following is used in the manufacturing of polythene in industry?
Which of the following is the hardest mineral?
Acid rain is caused due to pollution of the atmosphere by:
Which element gives hardness to stainless steel?
What does a catalyst do in a reaction?