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Chemistry : science MCQ Practice Questions & Answers (English) - ObjectiveMcq

science Practice

Topics

Biology
- Cell Biology
Chemistry
- Acids And Bases
- Periodic Table

PracticescienceChemistry

Chemistry in science : Practice MCQ Questions & Answers with Explanations

2 practice sets · Page 1 of 1

ScienceMediumChemistryAcids And Bases

1.

What is the pH of a neutral solution at 25°C?

A

0

B

7

C

14

D

1

Correct Answer:

(B) 7

Explanation:

A neutral solution has equal concentrations of H⁺ and OH⁻ ions. At 25°C, pH = 7 indicates neutrality.

ScienceEasyChemistryPeriodic Table

2.

Which element has the chemical symbol 'Na'?

A

Nitrogen

B

Sodium

C

Nickel

D

Neon

Correct Answer:

(B) Sodium

Explanation:

'Na' comes from the Latin word 'Natrium', which is the symbol for Sodium.