List of top Chemistry Questions asked in EAMCET

Observe the following reaction : $ A(g)+3B(g)\xrightarrow{{}}2C(g) $ The rate of this reaction $ \left( -\frac{d[A]}{dt} \right) $ is $ 3\times {{10}^{-3}}\,\text{mol}\,{{\text{L}}^{-1}}. $ What is the value of $ -\frac{d[B]}{dt} $ in $ \text{mol}\,{{\text{L}}^{-1}}{{\min }^{-1}}. $ ?
Consider the following reactions : (i) $ Al+NaOH+{{H}_{2}}O\xrightarrow{\Delta } $ (ii) $ {{F}_{2}}+NaOH(conc.)\xrightarrow{{}} $ (iii) $ NaOH+P(white)+{{H}_{2}}O\xrightarrow{{}} $ The correct set of reactions which give gaseous product is
Ethyl alcohol exhibits acidic character on reacting with
Which of the following is obtained in a carbylamine reaction?
Identify X and Yin the following sequence ofreactions $CH_3CHO \xrightarrow{HNO_3} X \xrightarrow{P_4O_{10}} Y $
4 g of hydrocarbon $ ({{C}_{x}}{{H}_{y}}) $ on complete combustion gave 12 g of $ \text{C}{{\text{O}}_{\text{2}}}\text{.} $ What is the empirical formula of the hydrocarbon? (C=12,H=1)
Which of the following gives paracetamol on acetylation?
Which of the following is not an air pollutant ?
Observe the following reaction ; $\, \, \, \, \, \, \, \, \, \, \, A(g) + 3B(g) \longrightarrow \, \, 2C(g)$ The rate of this reaction $\big(-\frac{d [A]}{dt}\big)$ is $3 \times 10^{-3} \, mol \, L^{-1} \, min^{-1}.$ What is thd value of $-\frac{d [B]}{dt}$ in $mol \, L^{-1} \, min^{-1}$?
Which of the following molecules has zero dipole moment?
A and B are ideal gases. The molecular weights of A and B are in the ratio of 1 : 4. The pressure of a gas mixture containing equal weights of Aand B is P atm. What is the partial pressure (in atm.) of B in the mixture
$ {{C}_{2}}{{H}_{2}}+2HCl\to {{C}_{2}}{{H}_{4}}C{{l}_{2}} $ is an example of ......reaction.
In which part of atmosphere, ozone layer is present?
If the boiling point of ethanol (molecular weight = 46) is $ \text{78}{{\,}^{\text{o}}}\text{C,} $ what is the boiling point of diethyl ether ? (molecular weight =74)
What are X and Y in the reaction $ {{C}_{2}}{{H}_{4}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{80{{\,}^{o}}C}X({{H}_{2}}O./\Delta a)Y $
The values of four quantum numbers of valence electron of an element are $ n=4,l=0,m=0 $ and $ s=+\frac{1}{2}. $ The element is:
Gun metal is an alloy of:
The number of oxygen atoms bonded to each phosphorus atom in P$_4O_{10}$ is
Xenon hexaflouride reacts with silica to form a xenon compound X. The oxidation state of xenon in X is:
Identify the correct sequence of increasing number of a bonds in the structures of the following molecules: I. $ {{H}_{2}}{{S}_{2}}{{O}_{6}} $ II. $ {{H}_{2}}S{{O}_{3}} $ III. $ {{H}_{2}}{{S}_{2}}{{O}_{5}} $
In which of the following, there are 3 bp and 2 lp?
Sulphur reacts with chlorine in 1:2 ratio and forms X. Hydrolysis of X gives a sulphur compound Y. What is the hybridisation state of central atom in the anion of F?
100 mL of 0.015 M HCl solution is mixed "with 100 mL of 0.005 M HCl. What is the pH of the resultant solution?
An element has 2 electrons in its K-shell, 8 electrons in L-shell, 13 electrons in M-shell and one electron in N-shell. The element is:
The formula of exhausted permutait is: