Correct Answer: A) lead and tin

Correct Answer: D) 5

Explanation

First, let's understand what isomers are. Isomers are compounds with the same molecular formula but different structural formulas. They have the same number of atoms of each element but different arrangements of these atoms in space.

Now, let's examine the given molecular formula: C\(_3\)H\(_8\)O. We can identify the possible structural isomers by rearranging the carbon and hydrogen atoms around the oxygen atom.

There are two main categories of isomers we can form with this formula: alcohols and ethers.

Alcohols: In an alcohol, the oxygen atom is bonded to one of the carbon atoms through a single bond. The possible alcohol isomers for this molecular formula are:

1. 1-Propanol: CH\(_3\)CH\(_2\)CH\(_2\)OH
2. 2-Propanol: CH\(_3\)CH(OH)CH\(_3\)

Ethers: In an ether, the oxygen atom is bonded to two carbon atoms through single bonds. The possible ether isomers for this molecular formula are:

1. Methoxymethane (dimethyl ether): CH\(_3\)OCH\(_3\)
2. Ethoxymethane: CH\(_3\)OCH\(_2\)CH\(_3\)
3. 1-Methoxypropane: CH\(_3\)CH\(_2\)OCH\(_3\)

Combining both categories, we have a total of 5 isomers for the molecular formula C\(_3\)H\(_8\)O, which corresponds to the correct answer, Option D.

Correct Answer: D. alkanal

Correct Answer: A.¹³₆X

Correct Answer: C. iron

Correct Answer: A. greater than their ionic radii

Correct Answer: B. deliquescent

Correct Answer: D. ethene

Correct Answer: D) 5.6dm³

Explanation

First, let's write down the balanced chemical equation for the reaction between H\(_2\)SO\(_4\) and zinc (Zn):

\(H_2SO_4 + Zn \rightarrow ZnSO_4 + H_2\)

From the balanced equation, we can see that 1 mole of H\(_2\)SO\(_4\) reacts with 1 mole of zinc to produce 1 mole of hydrogen gas (H\(_2\)).

We are given that the volume of 0.5M H\(_2\)SO\(_4\) is 500 cm\(^3\). To find the number of moles of H\(_2\)SO\(_4\), we use the formula:

Moles = Molarity

Correct Answer: B. OH^-