Nature of given oxides or hydroxides: acidic, basic, amphoteric or neutral

1. A.
   $1 \rightarrow C;2 \rightarrow A;3 \rightarrow B;4 \rightarrow B;5 \rightarrow C$
2. B.
   $1 \rightarrow A;2 \rightarrow C$; $3 \rightarrow B;4 \rightarrow A;5 \rightarrow C$
3. C.
   $1 \rightarrow B;2 \rightarrow A;3 \rightarrow C$; $4 \rightarrow A;5 \rightarrow C$
4. D.
   $1 \rightarrow A;2 \rightarrow C$; $3 \rightarrow B;4 \rightarrow B;5 \rightarrow C$

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1. A.
   $N_{2}O,BaO$
2. B.
   $CaO,{SiO}_{2}$
3. C.
   $B_{2}O_{3},CaO$
4. D.
   $B_{2}O_{3},{SiO}_{2}$

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1. A.
   ${SO}_{3}$
2. B.
   ${SiO}_{2}$
3. C.
   $CaO$
4. D.
   ${Al}_{2}O_{3}$

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1. A.
   (A) - (IV), (B) - (III), (C) - (I), (D) - (II)
2. B.
   (A) - (IV), (B) - (II), (C) - (I), (D) - (III)
3. C.
   (A) - (II), (B) - (IV), (C) - (III), (D) - (I)
4. D.
   (A) - (I), (B) - (II), (C) - (III), (D) - (IV)

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1. A.
   ${Na}_{2}O,K_{2}O,{Al}_{2}O_{3}$ and ${As}_{2}O_{3}$
2. B.
   ${Al}_{2}O_{3},{As}_{2}O_{3},CO$ and NO
3. C.
   $K_{2}O,{Cl}_{2}O_{7},{As}_{2}O_{3}$ and NO
4. D.
   ${Na}_{2}O,N_{2}O,{Al}_{2}O_{3}$ and CO

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1. A.
   Both Statement-I and Statement-II are true.
2. B.
   Both Statement-I and Statement-II are false.
3. C.
   Statement-I is true but Statement-II is false.
4. D.
   Statement-I is false but Statement-II is true.

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