TS EAMCET PYQs for Introduction to Organic Chemistry with Solutions: Practice TS EAMCET Previous Year Questions

1.

The major product 'Y' in the given sequence of reactions is:

• \( CH_3CH_2CH_2Br \)
  
• \( CH_3CH(Br)CH_3 \)
  
• \( CH_3COC_6H_5 \)
  
• \( C_6H_5COBr \)
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2.

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?

• \(X_2Y_3\)
  
• \(XY_3\)
  
• \(X_3Y\)
  
• \(X_3Y_2\)

3.

In the given reaction sequence, identify Z.

4.

The normality of a 20-volume solution of hydrogen peroxide is:

• 0.892 N
  
• 1.785 N
  
• 2.678 N
  
• 3.570 N
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5.

Arrange the following halides in decreasing order of their reactivity towards dehydrohalogenation: 

• B > D > A > C
  
• B > D > C > A
  
• D > B > C > A
  
• D > B > A > C 

6.

Identify the products R and S in the reaction sequence given. 

• \( (CH_3)_3Cl, CH_3OH \)
  
• \( (CH_3)_3COH, CH_3I \)
  
• \( (CH_3)_3COH, CH_3OH \)
  
• \( (CH_3)_2C=CH_2, CH_3OH \)

7.

Observe the following species: (i) \( NH_3 \) (ii) \( AlCl_3 \) (iii) \( SnCl_4 \) (iv) \( CO_2 \) (v) \( Ag^+ \) (vi) \( HSO_4^- \) How many of the above species act as Lewis acids?

• 5
  
• 3
  
• 4
  
• 2
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8.

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 \( Y \).

• \( Na_3PO_4, (NH_4)_2MoO_3 \)
  
• \( Na_3PO_4, (NH_4)_2MoO_4 \)
  
• \( H_3PO_4, (NH_4)_2MoO_4 \)
  
• \( Na_3PO_4, (NH_4)_3PO_4 \cdot 12MoO_3 \)
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9.

The functional groups involved in the conversion of glucose to gluconic acid and gluconic acid to saccharic acid respectively are:

10.

An alkene X (C\(_4\)H\(_8\)) exhibits geometrical isomerism. Oxidation of X with KMnO\(_4\)/H\(^+\) gave Y. On heating sodium salt of Y with a mixture of NaOH and CaO gave Z. What is Z?

• CH\(_3\)CH\(_3\)
  
• CH\(_3\)CH\(_2\)CH\(_3\)
  
• CH\(_3\)CH\(_2\)CH\(_2\)CH\(_3\)
  
• CH\(_4\)

11.

A halogen compound X (C\(_4\)H\(_9\)Br) on hydrolysis gave alcohol Y. The alcohol Y undergoes dehydration with 20\% H\(_3\)PO\(_4\) at 358 K. What is X?

• (CH\(_3\))\(_3\)CBr
  
• (CH\(_3\))\(_2\)CHCH\(_2\)Br
  
• CH\(_3\)CH\(_2\)CH\(_2\)CH\(_2\)Br
  
• CH\(_3\)CH(Br)CH\(_2\)CH\(_3\)

12.

Which of the following sequence of reagents converts benzoic acid to benzaldehyde?

• \( \text{C}_2\text{H}_5\text{OH}, \text{H}^+ \); (i) DIBAL-H (ii) \( \text{H}_2\text{O} \)
  
• \( \text{SOCl}_2 \); \( \text{H}_2, \text{Ni} \)
  
• \( \text{C}_2\text{H}_5\text{OH}, \text{H}^+ \); \( \text{LiAlH}_4, \text{H}_2\text{O} \)
  
• \( \text{LiAlH}_4, \text{H}_2\text{O} \); \( \text{KMnO}_4, \text{H}^+ \)
  

13.

Reaction of conversion of Y to Z in the given reaction corresponds to: 

• Reimer-Tiemann reaction
  
• Kolbe’s reaction
  
• Cannizzaro reaction
  
• Stephen reaction 
   

14.

X and Z respectively in the following reaction sequence are: \[ C_3H_6 \xrightarrow{X} Y \xrightarrow{C_6H_6/AlCl_3} Z \]

15.

In which of the following ionic pairs, the second ion is smaller in size than the first ion?

• \( Al^{3+}, Mg^{2+} \)
  
• \( F^-, Na^+ \)
  
• \( O^{2-}, N^{3-} \)
  
• \( Mg^{2+}, Na^+ \)
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