Directions How to Answer

Aptitude Test Topic: Biology

Biology test evaluate test taker's in-depth understanding of the subject.

Directions

The following are questions of Biology. Select the correct option to represent your answer.

To give the answer click/tap the option alphabet for your answer choice. for correct answer green check and for wrong answer a red cross will appear along with a button to show explanation with or without video of the question answer.

Biology: All Topics Practice MCQ

Question Statement:

Permanent hardness of water is due to-

Chlorides and sulphates of Calcium and Magnesium
Calcium bicarbonate sulphates
Magnesium bicarbonate
Clorides of Silver and Potassium

Explanation:

Correct Answer: A

Permanent hardness in water is hardness due to the presence of the chlorides and sulphates of calcium and magnesium,

Question: 1   Test: 1 of 13 Next Test

Tests

You are taking Aptitude Test No. 1

Each aptitude test is comprised of 10 except the last test which might have fewer than 10 in some topics.

You are at question (MCQ) number 1 and Test Number 1 of Biology: All topics. To deal with Biology questions, you must take lesson on the subject. In case of science and Art subjects revise your text books and in case of general aptitude topics take lessons from the topic page.

The question: Permanent hardness of water is due to- .... with options: Chlorides and sulphates of Calcium and Magnesium, Calcium bicarbonate sulphates, Magnesium bicarbonate , Clorides of Silver and Potassium can be solved with the concepts and understanding of Biology.