The logical statement $(\sim(\sim p \vee q) \vee(p \wedge r)) \wedge(\sim q \wedge r)$ is equivalent to
- A$\sim p \vee r$
- B$(p \wedge \sim q) \vee r$
- C$(p \wedge r) \wedge \sim q$
- D$(\sim p \wedge \sim q) \wedge r$
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Identify $X$ in the following sequence of reaction:
$C_6H_5-Cl$ $\xrightarrow[CuCN]{KCN} P$ $\xrightarrow{LiAlH_4} Q$ $\xrightarrow{HNO_2} X$
$C_6H_5-Cl$ $\xrightarrow[CuCN]{KCN} P$ $\xrightarrow{LiAlH_4} Q$ $\xrightarrow{HNO_2} X$
Match the following components with their percentage of the total cellular mass:
Components $\%$ of the total cellular mass $A$. Water $1$. $70-90$ $B$. Protein $2$. $10-15$ $C$. Carbohydrates $3$. $3$ $D$. Lipids $4$. $2$ $E$. Nucleic acids $5$. $5-7$ $F$. Ions $6$. $1$
| Components | $\%$ of the total cellular mass |
| $A$. Water | $1$. $70-90$ |
| $B$. Protein | $2$. $10-15$ |
| $C$. Carbohydrates | $3$. $3$ |
| $D$. Lipids | $4$. $2$ |
| $E$. Nucleic acids | $5$. $5-7$ |
| $F$. Ions | $6$. $1$ |
Which of the following is a secondary pollutant?
The element with atomic number $12$ belongs to ......... group and ......... period.
An electron is travelling along the $x$-direction. It encounters a magnetic field in the $y$-direction. Its subsequent motion will be
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