List of top Chemistry Questions asked in TS EAMCET

The sum of bond order of \(O_2\), \(O_2^-\), \(O_2^{2-}\) and \(O_2^+\) is equal to

Identify the pairs in which both molecules do not possess same type of hybridization:
I. H$_2$O, SO$_2$
II. PCl$_3$, NH$_3$
III. SO$_2$, SO$_3$
IV. BCl$_3$, NCl$_3$

Observe the following statements
Statement-I: Hybridisation is not same in both SF₆ and BrF₅.
Statement-II: BrF₅ is Square pyramidal while SF₆ is octahedral in shape
The correct answer is

Arrange the following in the increasing order of oxidation number of nitrogen
A. N$_2$O
B. NO$_3^-$
C. NO
D. NO$_2$

Which of the following is an example of antifertility drug?

An alcohol X (C$_4$H$_{10}$O) reacts with Conc.HCl/ZnCl$_2$ to give corresponding chloride. X on dehydration forms Y, which reacts with Baeyer's reagent to give Z. What is Z?

Observe the following set of reactions
2-Methylpropene $\xrightarrow{\text{HBr}, (\text{CH}_3\text{COO})_2}$ Y
2-Methylpropene $\xrightarrow{\text{HBr}}$ X
Correct statement regarding X and Y is

The sequence of reagents required to convert benzoic acid to n-propyl benzene is

What are X and Y respectively in the following set of reactions?

Which of the following sets are correctly matched?
i. P$_2$O$_3$, N$_2$O$_4$ - acidic
ii. N$_2$O, NO - neutral
iii. SeO$_3$, TeO$_3$ - basic
iv. As$_2$O$_3$, Sb$_2$O$_3$ - amphoteric
The correct option is

The hormone 'X' increases glucose levels in blood. Low levels of other hormone 'Y' causes lethargyness. What are X, Y respectively?

The catalyst used in the preparation of high density polythene is

The number of non-ionizable valences of Co$^{3+}$ and Pt$^{4+}$ ions in the complexes CoCl$_3\cdot5$NH$_3$ and PtCl$_4\cdot5$NH$_3$ is respectively

Permanganate titrations cannot be performed satisfactorily in presence of HCl. The reason is

Consider the following statements
Statement I: At room temperature H$_2$O is a liquid while H$_2$S is a gas
Statement II: H$_2$O is neutral while H$_2$S is acidic.
The correct answer is

Identify the incorrect match

Identify the correct statements from the following
I. Adsorption is an endothermic process.
II. Adsorption of a gas on the surface of a solid is accompanied by a decrease in enthalpy and a decrease in entropy.
III. Adsorption capacity of A, B and C gases on 1g of activated charcoal follows the order A>B>C. Their critical temperatures (T$_c$) follow the order T$_c$(A)>T$_c$(B)>T$_c$(C).

Consider the following statements
Statement-I: Oxides of sulphur and nitrogen are air pollutants
Statement-II: Photochemical smog is a reducing smog
The correct answer is

Identify the chain isomers from the following

What are X and Y in the following reaction sequence?
2-Methylbutane $\xrightarrow{\text{KMnO}_4}$ X$\xrightarrow{\text{Y}}$ C5H11Cl

Elements A and B form two non-volatile compounds (AB$_2$ and AB$_4$). When 1 g of AB$_2$ is added to 20 g of C$_6$H$_6$ (molar mass =78 gmol$^{-1}$) the freezing point of C$_6$H$_6$ is lowered by 2.3 K. When 1 g of AB$_4$ is added to 20 g of C$_6$H$_6$, the freezing point of C$_6$H$_6$ was lowered by 1.3 K. The atomic masses of A and B are respectively (K$_f$(C$_6$H$_6$)=5.1 K kg mol$^{-1}$)

An isomer of C$_8$H$_{18}$ is X. This has five primary, one tertiary and one quaternary carbon. What is X?

NaCl is crystallized in the presence of small quantity of SrCl$_2$. The formula of crystallized solid is Na$_{0.9998}$Sr$_{0.0001}$Cl. The number of cationic vacancies per mole of this solid is (N=6$\times10^{23}$ mol$^{-1}$)

Consider the following statements
Statement I: Benzene undergoes electrophilic substitution with excess chlorine in the presence of anhydrous AlCl$_3$
Statement - II: Benzene also undergoes electrophilic substitution with chlorine in the presence of UV light.
The correct answer is