Find the Mean from the Following Table
Given data:
\[ \begin{array}{|c|c|} \hline \text{Class-interval} & \text{Frequency (f)} \\ \hline 0-10 & 3 \\ 10-20 & 10 \\ 20-30 & 11 \\ 30-40 & 9 \\ 40-50 & 7 \\ \hline \end{array} \]
From the following data, the modal class of the table will be:
\[ \begin{array}{|c|c|c|c|c|c|} \hline \text{Class-interval} & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\ \hline \text{Frequency (f)} & 11 & 21 & 23 & 14 & 5 \\ \hline \end{array} \]
The mean of the following table will be:
Write notes on the following: (a) Saturated and unsaturated hydrocarbons (b) Corrosion (c) Precipitation reaction
Match the Chemical Substances with Their Applications
Column A
a. Acetic acid
b. Ethanol
c. Caustic soda
d. Detergents
Column B
i. In the formation of soap
ii. In making denatured spirit
iii. In the formation of vinegar
iv. In cleaning clothes
Tally of Substances and Their Applications
Given Substances in Column A:
a. Plaster of Paris
b. Caustic soda
c. Sodium bicarbonate
d. Bleaching powder
Applications in Column B:
i. Formation of soap
ii. Antibacterial
iii. Formation of an idol
iv. Used for bleaching
Crossing between long pea plants ( \(\text{LL}\)) and dwarf plants ( \(\text{tt}\)) shall yield the following generation: