Question : Which of the following statement(s) is/are correct?
Option 1: Oxides of non-metals are basic
Option 2: Oxides of non-metals are acidic
Option 3: Oxides of metals are acidic
Option 4: All options are correct
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Correct Answer: Oxides of non-metals are acidic
Solution : The correct answer is Oxides of non-metals are acidic.
Non-metallic oxides are acidic because, when they combine with water, an acid dissociates to produce hydrogen ions. These acids are produced when non-metal oxides like CO2 and SO2 react with water. When dissolved in water, they produce an acidic solution that turns litmus solution red.
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Question : Which of the following information is found in Ashoka's inscriptions?
Option 1: Life story
Option 2: Internal policy
Option 3: Foreign policy
Question : Which of the following options is/are correct about the similarity of the two triangles?
Option 1: The corresponding sides are proportional to each other.
Option 2: The corresponding angles are equal.
Option 3: The corresponding sides may or may not be equal to each other.
Option 4: All options are correct.
Question : Directions: Which one of the following is true? 1. All men and women are drivers. 2. All drivers are men. 3. All drivers are women. 4. Some drivers are women.
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Question : Which of the following metals has the least melting point?
Option 1: Gold
Option 2: Silver
Option 3: Mercury
Option 4: Copper
Question : Which are the four quantum numbers for an electron present in 4f orbital?
Option 1: n=4, I=3, m=+1, s=+1 / 2
Option 2: n=3, I=2, m=-2, s=+1 / 2
Option 3: n=4, I=4, m=-4, s=-1 / 2
Option 4: n=4, I=3, m=+4, s=+1 / 2
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