Question : Which of the following pair of compound name - formulas is correct? I. Hydrogen chloride --H2Cl II. Hydrogen sulphide --HS2
Option 1: Only II
Option 2: Neither I nor II
Option 3: Only I
Option 4: Both I and II
Correct Answer: Neither I nor II
Solution : The correct option is Neither I nor II.
Hydrogen chloride has the chemical formula HCl, where one hydrogen atom combines with one chlorine atom. Hydrogen sulfide has the chemical formula H2S, where two hydrogen atoms combine with one sulfur atom.
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Question : Which of the following pair of compound – general formula is correct? I. Alkenes – CnH2n II. Alkanes – CnH2n-1
Option 2: Only I
Option 3: Neither I nor II
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 4: Only II
Question : Which of the following pair types of nutrient–nutrient is correct? I. Macronutrient – Iron II. Micronutrient – Calcium
Question : Which of the following pair of microorganism - type is correct?
I. Paramecium - Fungi II. Penicillium - Protozoa.
Option 4: Only I
Question : Which of the following pair of plant disease–microorganisms is correct? I. Citrus canker – Virus II. Rust of wheat – Fungi
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