1
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1

$$ \text { What are } X \text { and } Z \text { in the following sequence of reactions? } $$

IAT (IISER) 2024 Chemistry - Hydrocarbons Question 1 English
A
IAT (IISER) 2024 Chemistry - Hydrocarbons Question 1 English Option 1
B
IAT (IISER) 2024 Chemistry - Hydrocarbons Question 1 English Option 2
C
IAT (IISER) 2024 Chemistry - Hydrocarbons Question 1 English Option 3
D
IAT (IISER) 2024 Chemistry - Hydrocarbons Question 1 English Option 4
2
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1

$$ \text { What are the correct structural descriptions for } M \text { and } N \text { ? } $$

IAT (IISER) 2024 Chemistry - Isomerism Question 2 English
A
M is $\beta$-D-(+)-glucopyranose and N is $\beta$-D-(-)-fructofuranose
B
M is $\alpha-\mathrm{D}-(+)$-glucopyranose and N is $\beta$-D-(-)-fructofuranose
C
M is $\alpha-\mathrm{D}-(+)$-glucopyranose and N is $\alpha-\mathrm{D}-(-)$-fructofuranose
D
M is $\alpha-\mathrm{D}-(+)$-glucofuranose and N is $\beta$-D-(-)-fructopyranose
3
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1
Consider an exothermic reaction: $2 \mathrm{~A}(\mathrm{~s}) \rightarrow \mathrm{B}(\mathrm{s})+\mathrm{C}(\mathrm{g})+\mathrm{D}(\mathrm{g})$. The correct statement about the reaction is
A
Spontaneous only at very low temperatures
B
Spontaneous only at very high temperatures
C
Non-spontaneous at all temperatures
D
Spontaneous at all temperatures
4
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1
The minimum energy needed to remove an electron from a metal corresponds to a wavelength of 500 nm . What is the total kinetic energy of all the photoelectrons ejected per second when the entire radiation from a 100 Watt bulb with a wavelength of 300 nm falls on the surface of the metal? [Planck's constant $=6.6 \times 10^{34} \mathrm{Js}$; speed of light $=3 \times 10^8 \mathrm{~ms}^{-1}$ ]
A
$1.6 \times 10^{-19} \mathrm{~J}$
B
$2.6 \times 10^{-19} \mathrm{~J}$
C
40 J
D
80 J
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