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 H 2 S , 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
Question : Which of the following pair of compound name – formulas is correct? I. Calcium oxide – CaO II. Aluminium oxide – Al2O3
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.
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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