Find the odd one out

Question 11 Mark

(a) $CH _3 COOH + CH _3 COONa$
(b) $NH _4 OH + NH _4 Cl$
(c) $H _2 CO _3+ NaHCO _3$
(d) $NaOH + NaCl$

Answer

(d) $NaOH + NaCl$
Reason: NaOH + NaCl is not a buffer mixture whereas others are buffer mixtures.

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Question 21 Mark

(a) Baking soda
(b) Tomato
(c) Soapy water
(d) Drain cleaner

Answer

(b) Tomato
Reason: Tomato has pH less than 7 and it is acidic whereas others have pH greater than 7 and they are basic.

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Question 31 Mark

(a) Vinegar
(b) Black coffee
(c) Sea water
(d) Orange juice

Answer

(c) Sea water
Reason: Sea water is basic and has pH > 7 whereas others are acidic and have pH < 7.

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Question 41 Mark

(a) $F ^{-}$
(b) $CH _3 COO$
(c) $O _2$
(d) $NO _2{ }^{-}$

Answer

(c) $O ^{2-}$
Reason: $O ^{2-}$ is a strong base whereas others are weak bases.

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Question 51 Mark

(a) $HNO _2$
(b) HF
(c) $H _2 SO _4$
(d) $CH _3 COOH$

Answer

(c) $H _2 SO _4$
Reason: $H _2 SO _4$ is a strong acid whereas others are weak acids.

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Question 61 Mark

(a) $NH _2^{-}$
(b) $O _2^{-}$
(c) $H ^{-}$
(d) $OH ^{-}$

Answer

(d) $OH ^{-}$
Reason: $OH ^{-}$is a very weak acid whereas others are strong bases.

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Question 71 Mark

(a) $HClO _4$
(b) HCl
(c) $HSO _4$
(d) $H _2 SO _4$

Answer

(c) $HSO _4$
Reason: $HSO _4$ is a very weak base whereas others are strong acid.

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Question 81 Mark

(a) HCOOH
(b) $CH _3 COOH$
(c) Lactic acid
(d) HCl

Answer

(d)HCI
Reason: HCl is a strong acid whereas others are weak acids.

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Question 91 Mark

(a) HCl
(b) $H _2 SO _4$
(c) $CH _3 COOH$
(d) $HNO _3$

Answer

(c) $CH _3 COOH$
Reason: $CH _3 COOH$ is a weak acid whereas others are strong acids.

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Question 101 Mark

(a) $SiF _4$
(b) $SF _4$
(c) $FeCl _3$
(d) $NH _3$

Answer

(d) $NH _3$
Reason: $NH _3$ is a Lewis base whereas others are Lewis acid.

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Question 111 Mark

(a) $NH _3$
(b) $H _2 O$
(c) $RNH _2$
(d) $BF _3$

Answer

(d) $BF _3$
Reason: $BF _3$ is a Lewis acid whereas others are Lewis base.

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Question 121 Mark

(a) $HNO _3$
(b) $Ba ( OH )_2$
(c) $H _3 PO _4$
(d) $CH _3 COOH$

Answer

(b) $Ba ( OH )_2$
Reason: $Ba ( OH )_2$ is the base whereas the others are acids.

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Chemistry Find the odd one out

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