Synthesis gas consists of equal volumes of:

a.
\\(NO^{2}\\) and \\(H_{2}O\\)

b.
CO and \\(H_{2}O\\)

c.
\\(N_{2}O \\)and CO

d.
\\(CO^{2}\\) and \\(H_{2}O\\)

The answer is (b) CO and \\(H_{2}O\\).

Synthesis gas, also known as syngas, is a mixture of carbon monoxide (CO) and hydrogen gas (\\(H_{2}\\)) that is typically produced by gasification of carbon-containing materials. The production of syngas is an important step in the manufacturing of various chemical products, including methanol, ammonia, and synthetic fuels.

In this case, the question asked for the two gases that make up synthesis gas. While there are various ratios of CO to \\(H_{2}\\) that can be used to produce syngas, the most common ratio is 1:1 by volume. Therefore, the correct answer is (b) CO and \\(H_{2}O\\).

The correct answer is b. CO and H2O.

Synthesis gas, also known as syngas, is a mixture of carbon monoxide (CO) and water vapor (H2O). It is produced by various processes, including the gasification of carbon-based materials such as coal or biomass. Syngas is a versatile fuel that can be used for producing electricity, heat, or other chemical compounds.

To determine which option is correct, we need to understand what synthesis gas is and what it consists of. Synthesis gas, also known as syngas, is a mixture of gases that is primarily composed of carbon monoxide (CO) and hydrogen (H2).

If we look at the given options, we can see that only one option includes CO and H2 as constituents of synthesis gas. Therefore, the correct answer is option b. CO and H2O.