List of top Chemistry Questions asked in AP EAPCET

An alkene X (\( C_4H_8 \)) on reaction with HBr gave Y (\( C_4H_9Br \)). Reaction of Y with benzene in the presence of anhydrous \( AlCl_3 \) gave Z which is resistant to oxidation with \( KMnO_4 + KOH \). What are X, Y, Z respectively? 

‘X’ is a protecting colloid. The following data is obtained for preventing the coagulation of 10 mL of gold sol to which 1 mL of 10% NaCl is added. What is the gold number of ‘X’?

The reactions which occur in blast furnace at 500 – 800 K during extraction of iron from haematite are 
 i. \(3Fe_2O_3 + CO \rightarrow 2Fe_3O_4 + CO_2\)
ii. \(Fe_2O_3 + 3C \rightarrow 2Fe + 3CO\)
iii. \(FeO + 4CO \rightarrow 3Fe + 4CO_2\)
iv. \(FeO + CO \rightarrow 2FeO + CO_2\)

Which of the following reactions give phosphine? 
i. Reaction of calcium phosphide with water
ii. Heating white phosphorus with concentrated NaOH solution in an inert atmosphere
iii. Heating red phosphorus with alkali

The paramagnetic complex ion which has no unpaired electrons in \( t_{2g} \) orbitals is
The number of essential and non-essential amino acids from the following list respectively is Given amino acids: Val, Gly, Leu, Lys, Pro, Ser
An alkene X (\( C_4H_8 \)) does not exhibit cis-trans isomerism. Reaction of X with \( Br_2 \) in the presence of UV light gave Y. What is Y?

Consider the following reactions:
 
 Y and Z respectively are:

 
The incorrect statement about 'B' is: 

The conversion of X to Y is:

Which of the following pair is not correctly matched?
The alkaline earth metal with lowest density is
Which of the following statements are not correct?
i. Atomic radius of Ga is less than that of Al
ii. The order of ionization enthalpy of group 13 elements is B>Al>Ga>In>Tl
iii. Boron trioxide is amphoteric in nature
The correct order of electron gain enthalpy of N, O, Cl, Al is.
Which of the following are not in accordance with the property mentioned against them? I. \( F_2>Cl_2>Br_2>I_2 \): Oxidising power
II.\( MI>MBr>MCl>MF\): Ionic character of metal halide
III. \( F_2<Cl_2<Br_2<I_2 \): Bond dissociation enthalpy
IV. \( HI<HBr<HCl<HF \): Hydrogen-halogen bond strength
The correct order of atomic radii of Al, Ga, In, Tl is
In the above reaction electrophile is substituted at meta position only, due to
electrophile is substituted

I. Electron density is more at ortho & para position
II. Electron density is relatively less at ortho & para position
III. Electron density is less at meta position
IV. Electron density is relatively more at meta position Correct answer is
1 L of 0.1 M HCl is added to 1 L of 0.1 M HA (weak acid) solution. To this solution, 16 g of solid NaOH is added. What is the pOH value of resultant solution? (Given molar mass of NaOH is 40 g/mol, $ \log 2 = 0.3, \log 4 = 0.6 $)
Out of seven crystal systems, how many have face-centred unit cells?
Which of the following types of isomerism is exhibited by [Co(NH$_3$)$_5$(NO$_2$)] (NO$_3$)$_2$ i. Optical ii. Linkage iii. Ionization iv. Coordination
The plot of \( \log \frac{x}{m} \) (y-axis) and \( \log p(x) \) (x-axis) is a straight line inclined at an angle of 45°. When the intercept, \( K \) is 10 and pressure is 0.3 atm, the amount of solute in grams adsorbed per gram of adsorbent (log3 = 0.4771) is:
The given unit cell belongs to the type:
The given unit cell belongs
Among the following, the correctly matched pair is:
Observe the following species \[ \text{AlCl}_3, \, \text{NH}_3, \, \text{H}^+, \, \text{Co}^{3+}, \, \text{OH}^-, \, \text{H}\text{Mg}^{2+}, \, \text{BF}_3, \, \text{Cl}^- \] How many Lewis bases are present in the above list?
The decomposition products of [FeO$_4$]$^{2-}$ are: