List of top Questions asked in AP EAPCET

The number of nucleophiles in the following list is: \[ CH_3NH_2, \quad CH_3CHO, \quad C_2H_4, \quad CH_3SH \]

Match the following:
 

A full-wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple output will be:
Which of the following oxides is acidic in nature?

The bond angles \( b_1, b_2, b_3 \) in the above structure are respectively in \( ^\circ \):

Ba, Ca, Sr form halide hydrates. Their formulae are \( BaCl_2 \cdot xH_2O \), \( CaCl_2 \cdot yH_2O \), \( SrCl_2 \cdot zH_2O \). The values of \( x, y, z \) respectively are:
A PN junction diode is used as:
‘X’ on hydrolysis gives two products. One of them is solid. What is ‘X’?
A carrier is simultaneously modulated by two sine waves with modulation indices of 0.3 and 0.4; then the total modulation index is:
At 27°C, 100 mL of 0.4 M HCl is mixed with 100 mL of 0.5 M NaOH. To the resultant solution, 800 mL of distilled water is added. What is the pH of the final solution?
For the reaction: \[ A_2(g) \rightleftharpoons B_2(g) \] The equilibrium constant \( K_c \) is given as 99.0. In a 1 L closed flask, two moles of \( B_2(g) \) is heated to T(K). What is the concentration of \( B_2(g) \) (in mol L\(^{-1}\)) at equilibrium?
Identify the molecule for which the enthalpy of atomization \( (\Delta_a H^\circ) \) and bond dissociation enthalpy \( (\Delta_{\text{bond}} H^\circ) \) are not equal.
Observe the following reaction: \[ 2A_2(g) + B_2(g) \xrightarrow{T(K)} 2A_2B(g) + 600 \text{ kJ} \] The standard enthalpy of formation \( (\Delta_f H^\circ) \) of \( A_2B(g) \) is:

Given below are two statements: Statement-I: In the decomposition of potassium chlorate, Cl is reduced. 
Statement-II: Reaction of Na with \( O_2 \) to form \( Na_2O \) is a redox reaction. 

At 133.33 K, the RMS velocity of an ideal gas is \[ (M = 0.083 \text{ kg mol}^{-1}, R = 8.3 \text{ J mol}^{-1} \text{ K}^{-1}) \]

Two statements are given below: Statement-I: The ratio of the molar volume of a gas to that of an ideal gas at constant temperature and pressure is called the compressibility factor. 
Statement-II: The RMS velocity of a gas is directly proportional to the square root of \( T(K) \). 

Observe the following structure:
 
The formal charges on the atoms 1, 2, 3 respectively are:

The correct order of bond angles of the molecules \( SiCl_4 \), \( SO_3 \), \( NH_3 \), \( HgCl_2 \) is:

Match the following: 

Identify the pair of elements in which the number of electrons in the (n-1) shell is the same:

The angular momentum of an electron in a stationary state of \(Li^{2+}\) (\(Z=3\)) is \( \frac{3h}{\pi} \). The radius and energy of that stationary state are respectively.

For the probability distribution of a discrete random variable \( X \) as given below, the mean of \( X \) is:

A, B, C are mutually exclusive and exhaustive events of a random experiment and E is an event that occurs in conjunction with one of the events A, B, C. The conditional probabilities of E given the happening of A, B, C are respectively 0.6, 0.3 and 0.1. If \( P(A) = 0.30 \) and \( P(B) = 0.50 \), then \( P(C \mid E) = \):
Two digits are selected at random from the digits 1 through 9. If their sum is even, then the probability that both are odd is:

S is the sample space and A, B are two events of a random experiment. Match the items of List A with the items of List B. 

 
Then the correct match is: