List of top Chemistry Questions asked in AP EAMCET

Identify the correct statements from the following:

Oxidation of NaBH_4 with \(I_2\) gives \(B_2H_6\)
(ii) \(B_2H_6\) burns in oxygen and releases an enormous amount of energy 
(iii) \(B_2H_6\) on hydrolysis gives a tribasic acid

The first order reaction \( A(g) \rightarrow B(g) + 2C(g) \) occurs at 25\(^\circ\)C. After 24 minutes the ratio of the concentration of products to the concentration of the reactant is 1:3. What is the half-life of the reaction (in min)? (log 1.11 = 0.046)
Which of the following has maximum coagulating power in the coagulation of positively charged sol?
Identify the autocatalytic reaction from the following:
The anode and cathode used in electrolytic refining of copper respectively are:

The spin-only magnetic moments of the complexes \([Mn(CN)_6]^{3-}\) and \([Co(C_2O_4)_3]^{3-}\) are respectively:

PHBV is a biodegradable polymer of two monomers X and Y. X and Y respectively are:
The carbohydrate which does not react with ammoniacal \( AgNO_3 \) solution is:

The structure given below represents:

The major product (X) formed in the given reaction is an example of:

An alcohol X (\( C_4H_{10}O \)) reacts with conc. HCl at room temperature to give Y (\( C_4H_9Cl \)). Reaction of X with Cu at 573 K gave Z. What is Z?
A carbonyl compound X (\( C_3H_6O \)) on oxidation gave a carboxylic acid Y (\( C_3H_6O_2 \)). Oxime of X is:
In neutral medium potassium permanganate oxidizes \( I^- \) to \( X \). Identify \( X \).
The disproportionation products of ortho phosphorous acid are:
The \(\Delta T_b\) value for 0.01 m KCl solution is 0.01 K. What is the Van’t Hoff factor? (Kb for water = 0.52 K kg mol\(^{-1}\))
Tropolone is an example for which of the following class of compounds?
Some substances are given below Ag: CO\(_2\) (s); SiO\(_2\) (s); ZnS (s) SO\(_2\) (s); A/N: HCl (s); H\(_2\)O (s) The number of molecular solids and network solids in the above list is respectively.
What is the conjugate base of chloric acid?
Two statements are given below: I. In dry cleaning, the solvent \(Cl_2C\) = \(CCl_2\) was earlier used and now it is replaced by liquefied \(CO_2\).
II. In bleaching of paper, \(H_2O_2\) was used earlier and now it is replaced by chlorine gas.
The correct order of decomposition temperature of \(MgCO_3\) (X), \(BaCO_3\) (Y), \(CaCO_3\) (Z) is:
Which one of the following is used as piezoelectric material?
A golf ball of mass ‘m’ has a speed of 50 m/s. If the speed can be measured within accuracy of 2\%, the uncertainty in the position is
Which one of the following sets is not correctly matched?
The validity of Freundlich isotherm can be verified by plotting:
Aluminium carbide on reaction with \( D_2O \) gives \( Al(OD)_3 \) and ‘X’. What is ‘X’?