List of top Chemistry Questions asked in TS EAMCET

Identify the set of molecules which act as bleaching agents only by oxidation
Which of the following is used in liquid detergents?
At 300 K, 0.06 kg of an organic solute is dissolved in 1 kg of water. The vapour pressure of the solution is 3.768 kPa. If the vapour pressure of pure water at that temperature is 3.78 kPa, what is the molar mass of the solute (in g mol\(^{-1}\))?

Match the following:
 


The correct answer is:
 

The number of molecules with electrophilic centres in the following is CH\(_3\)CH\(_2\)Br, CH\(_3\)COCH\(_3\), CH\(_3\)CH\(_2\)CN, (CH\(_3\))\(_2\)Cd
An organic compound containing phosphorus on oxidation with \( Na_2O_2 \) gives a compound \( X \). When \( X \) is boiled with \( HNO_3 \) and treated with a reagent, it gives a yellow precipitate \( Y \). Identify \( X \) and \( Y \).
12 g of an element reacts with 32 g of oxygen. What is the equivalent weight of the element?
Observe the following two statements: I. For an isolated system, \( \Delta U = 0 \); \( q = 0 \) II. For a closed system, \( \Delta U = 0 \); \( q \neq 0 \) The correct answer is
Cellulose is a polysaccharide and is made of:
The correct order of reducing power of alkali metals in aqueous solution is
The set of complex ions having the same number of unpaired electrons is

Observe the following reactions (unbalanced): 

\( P_2O_3 + H_2O \rightarrow X \)

\( P_4O_{10} + H_2O \rightarrow Y \)

The number of \( P=O \) bonds present in \( X, Y \) are respectively:

The set of elements which obey the general electronic configuration \( (n-1)d^{10} ns^2 \) is:}

Among the following, the incorrect statement about chloramphenicol is:
At T(K), \( K_c \) for the dissociation of \( PCl_5 \) is \( 2 \times 10^{-2} \) mol L\(^{-1}\). The number of moles of \( PCl_5 \) that must be taken in 1.0 L flask at the same temperature to get 0.2 mol of chlorine at equilibrium is
The common components of photochemical smog are:
The decomposition of benzene diazonium chloride is a first-order reaction. The time taken for its decomposition to \( \frac{1}{4} \) and \( \frac{1}{10} \) of its initial concentration are \( t_{1/4} \) and \( t_{1/10} \) respectively. The value of \( \frac{t_{1/4}}{t_{1/10}} \times 100 \) is: (Given: log 2 = 0.3)
Distilled water boils at 373.15 K and freezes at 273.15 K. A solution of glucose in distilled water boils at 373.202 K. What is the freezing point (in K) of the same solution? (For water, \( K_b = 0.52 \) kg mol\(^{-1}\), \( K_f = 1.86 \) kg mol\(^{-1}\))
In the following reaction: \[ \text{C} + \text{Conc.} \, \text{H}_2\text{SO}_4 \xrightarrow{\Delta} \text{X} + \text{Y} + \text{H}_2\text{O} \] X and Y in the above reaction are:
The first ionization enthalpies of the elements X, Y, Z of the second period are 899, 1402, 520 kJ/mol respectively. X, Y, Z respectively are:
Electromagnetic radiation has electric and magnetic field components. These two components:

Which among the following oxoacids of phosphorus will have P-O-P bonds?

I. H4P2O5

II. H4P2O6

III. H4P2O7

IV. (HPO3)3

 

Among the oxides SiO\(_2\), SO\(_2\), Al\(_2\)O\(_3\), and P\(_2\)O\(_5\), the correct order of acidic strength is:
A crystal is formed by X (cations) and Y (anions). Atoms of Y form ccp and atoms of X occupy half of octahedral voids and half of tetrahedral voids. What is the molecular formula of the crystal?
At 300 K, the vapour pressure of liquids A and B are 600 and 500 mm of Hg respectively. Two moles of A and three moles of B are mixed. The mole fractions of A and B in vapor state are respectively