List of top Chemistry Questions asked in AP EAPCET

For the reaction \( \text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \) at 298 K, the enthalpy change \( \Delta H = -92.4 \, \text{kJ/mol} \). What happens to the equilibrium when temperature is increased?

At 298 K, the value of $K_c$ for the reaction A$_2$O$_4$(g) $\rightleftharpoons$ 2AO$_2$(g) is $x$ mol L$^{-1}$. What is the approximate $K_p$ value for this reaction?
Given: $R = 0.082$ L atm mol$^{-1}$ K$^{-1}$
At T(K), consider the following gaseous reaction, which is in equilibrium: N$_2$O$_5 \rightleftharpoons 2$NO$_2 + \frac{1}{2}$O$_2$. What is the fraction of N$_2$O$_5$ decomposed at constant volume and temperature, if the initial pressure is 300 mm Hg and pressure at equilibrium is 480 mm Hg? (Assume all gases as ideal)
When 30 mL of 0.2 M \( NH_4OH \) is added to 30 mL of 2 M \( NH_4Cl \) solution. If the pH of the buffer formed is 8.2, what is the \( pK_b \) of \( NH_4OH \)?
Sucrose when boiled with dilute HCl gives two functional isomers X and Y. X gives monocarboxylic acid with bromine water but not Y. The number of --OH groups in cyclic structure of X is
The pyrimidine bases found in RNA are
Which of the following contain $\alpha$-D-glucose units?
a) cane sugar b) milk sugar c) cellulose d) amylose
The improper functioning of 'X' results in Addison's disease. Hormone 'Y' is responsible for the development of secondary female characteristics. 'X' and 'Y' are respectively:

Consider the following 
Statement-I: Cane sugar is a disaccharide of \(\alpha\)-D-glucose and \(\beta\)-D-fructose
Statement-II: Milk sugar is a disaccharide of \(\alpha\)-D-glucose and \(\beta\)-D-galactose

 

Match the following:
List-I (Glycosidic linkage) 
A. $\alpha$-1,4 
B. $\beta$-1,4 
C. $\alpha$-1,4, $\alpha$-1,6 
List-II (Polysaccharide) 
I. Amylose 
II. Amylopectin 
III. Cellulose

The list given below contains essential amino acids that are basic (X) and also non-essential amino acids that are neutral (Y). X and Y, respectively are
a) Lysine
b) Alanine
c) Serine
d) Arginine
e) Tyrosine
Consider the following Statement-I : Lactose is composed of \( \alpha \)-D-glucose and \( \beta \)-D-glucose. Statement-II : Lactose is a reducing sugar. The correct answer is
Consider the following statements: Statement-I: Primary structure of protein represents its constitution. Statement-II: \( \alpha \)-Helix and \( \beta \)-pleated sheet structure of protein represent tertiary structure of it. The correct answer is:
Consider the following statements: Statement-I: Primary structure of protein represents its constitution. Statement-II: \( \alpha \)-Helix and \( \beta \)-pleated sheet structure of protein represent tertiary structure of it. The correct answer is:
The synthetic detergent used in toothpaste is of type X. Animal starch is Y.
X and Y respectively are
Identify the sets in which enzyme, its source and enzyme reaction are correctly matched:
I) maltase, yeast; proteins $\rightarrow$ peptides
II) diastase, malt; starch $\rightarrow$ maltose
III) zymase, yeast; glucose $\rightarrow$ C$_2$H$_5$OH + CO$_2$
Identify the correct statements regarding the enzymes
I) Almost all enzymes are proteins
II) Enzymes are not specific in nature
III) Enzymes work effectively in the pH range of 5–7
IV) Enzymes work effectively between 310 K and 330 K temperature
The incorrect statement about amylose is:
Activation energy for the hydrolysis of sucrose by acid is X kJ mol$^{-1}$ and by sucrase is Y kJ mol$^{-1}$. X and Y respectively are
The structure of the nitrogen-containing heterocyclic base shown below represents:
Consider the following Statement-I : Lactose is composed of \( \alpha \)-D-glucose and \( \beta \)-D-glucose. Statement-II : Lactose is a reducing sugar. The correct answer is
Identify the essential amino acids from the following:
A) Leucine
B) Tyrosine
C) Cysteine
D) Histidine
Which of the following represents nucleoside of RNA?
Which of the following statements is not correct for glucose?
When 3 amp current was passed through an aqueous solution of salt of a metal M (atomic weight 106.4 u) for 1 hour, 2.977 g of Mn+ was deposited at cathode. The value of n is (1 F = 96500 C mol-1)