Question
Write a note on Gabriel phthalimide synthesis.
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Some of the following statements apply to DNA only, some to RNA only and some to both. Lable them accordingly.
a. The polynucleotide is double stranded. ( …………… )
b. The polynucleotide contains uracil. ( …………… )
c. The polynucleotide contains D-ribose ( …………… ).
d. The polynucleotide contains Guanine ( …………… ).
a. The polynucleotide is double stranded. ( …………… )
b. The polynucleotide contains uracil. ( …………… )
c. The polynucleotide contains D-ribose ( …………… ).
d. The polynucleotide contains Guanine ( …………… ).
Calculate the cell potential of the following cell at $25^{\circ} C$,
$Z _{ n ( S )}| \underset{ 0 . 1 ~ M }{ Z n _{\text {(aq) }}^{++}} \| \underset{ 0 . 5 ~ M }{ C u _{\text {(aq) }}^{++}} \mid C u$
Standard reduction potentials (SRP) of $Zn$ and $Cu$ are $-0.76 V$ and $0.334 V$ respectively.
→$Z _{ n ( S )}| \underset{ 0 . 1 ~ M }{ Z n _{\text {(aq) }}^{++}} \| \underset{ 0 . 5 ~ M }{ C u _{\text {(aq) }}^{++}} \mid C u$
Standard reduction potentials (SRP) of $Zn$ and $Cu$ are $-0.76 V$ and $0.334 V$ respectively.
What are rare earth elements?
Define buffer solution.
Three moles of an ideal gas are expanded isothermally from $15\ dm^3$ to $20\ dm^3$ at a constant external pressure of $1.2$ bar, calculate the amount of work in Joules.
→An organic compound A with molecular formula $C_4H_{10}O$ on treatment with phosphorus pentachloride gives alkyl chloride. Alkyl chloride on treatment with Mg in presence of dry ether gives a highly reactive compound B.
Compound B reacts with water to give hydrocarbon C. Alkyl chloride on treatment with Na in dry ether as a solvent gives alkane, $2,2,3,3$-tetramethylbutane. Identify ‘A’, ‘B’, ‘C’
→Compound B reacts with water to give hydrocarbon C. Alkyl chloride on treatment with Na in dry ether as a solvent gives alkane, $2,2,3,3$-tetramethylbutane. Identify ‘A’, ‘B’, ‘C’
The gaseous reaction $A_2 \rightarrow 2 A$ is first order in $A_2$. After 12.3 minutes, $65 \%$ of $A_2$ remains undecomposed. How long will it take to decompose $90 \%$ of $A _2$ ? What is the half-life of the reaction?
→Write two applications of electrochemical series.
What is the difference between a double salt and a complex? Give an example.
Which nanomaterial is used in sunscreen lotion? Write its use.