Question
Which substance changes the rate of chemical reactions
and remains chemically different during reaction?Solution
"Trigger" loosely, it could be seen as a factor that initiates or changes the rate of a reaction. Typically, in chemistry, such a role is played by a catalyst, but a catalyst does not undergo permanent chemical change itself.
More Previous Year Paper Questions
- What will come in place of (?), in the given expression.
√2025 + 35% of 400 = ? (15 x 6 + 60% of 500 - 16 x 7) = ?
125 ÷ 5 + 14 × 4 = ? + 72 ÷ 4 – 35
[(40)2 ÷ 32 × 4] ÷ 50 = ?
√144 × √121 + 25% of 600 = ? + 256
?% of 740 – 8% of 650 = 7.2
?% of 320 - 69 = 123
(16% of 550 – 22% of 700 + 45% of 800) = ?
Find the simplified value of the given expression:
{(1 x 2) + (3 + 4) - (5 x 6) + (7 + 8) - (9 x 10)}
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