PART - 1 CH - 1 Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

Why pH of our blood remains constant at 7.4 through we quite often eat spicy food?

Calculate number of atom:
52 moles of Ar

Express in the scientific notation :
500.0

What is the relationship between standard oxidation potential and standard reduction potential?

Which is the smallest among Na⁺, Mg²⁺, Al³⁺ and why?

In 20 gm hydrogen how many gram moles are present?

Which of the following is not a transition metal?

1. Ag
2. Pb
3. W
4. Mn

In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:

1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3. Assertion is true but Reason is false.
4. Both Assertion and Reason are false.

Assertion: Heat capacity is the amount of heat required to raise the temperature of a body by 1K.
Reason: Heat capacity is an extensive property and It depends upon the size of the body.

Bring out the following conversion ethane to ethene.