Question : Which of the following is not a neutral oxide?
Option 1: N2O
Option 2: Na2O
Option 3: NO
Option 4: CO
Correct Answer: Na2O
Solution : The correct option is Na2O.
Sodium oxide (Na2O) is not a neutral oxide. A neutral oxide reacts with water to form a neutral solution. Na2O is a basic oxide, meaning it reacts with water to form a basic (alkaline) solution. N2O (nitrous oxide) and NO (nitric oxide) are neutral oxides, while CO (carbon monoxide) is a non-metallic oxide with neutral behaviour.
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Question : Water gas is the combination of:
Option 1: CO and H2
Option 2: CO2 and H2
Option 3: CO and H2O
Option 4: CO2 and CO
Question : Supersonic jets cause thinning of which layer?
Option 1: O2 layer
Option 2: O3 layer
Option 3: CO2 layer
Option 4: SO2 layer
Question : Which of the following is the formula of barium peroxide?
Option 1: Ba2O2
Option 2: BaSO4
Option 3: BaO
Option 4: BaO2
Question : Which of the following pair of compound name – formulas is correct? I. Calcium oxide – CaO II. Aluminium oxide – Al2O3
Option 1: Only I
Option 2: Both I and II
Option 3: Neither I nor II
Option 4: Only II
Question : In which of the following ions, the colour is not due to d-d transition?
Option 1: [Ti(H2O)6]+3
Option 2: CoF63−
Option 3: MnO4−
Option 4: [Cu(NH3)4]2+
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