Teachoo MCQ Test

Assertion Reasoning Quiz

Preparing for CBSE

Chapter 6 Class 8 - We Distribute yet things Multiply (Ganita Prakash) | 7 questions

Timed test. Answer every question before time runs out. Correct answers and solutions appear after submission.
Time remaining 648
Question 1 of 7
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Question 1 of 7
Assertion (A): In every \(2\times2\) calendar block, one diagonal product exceeds the other by 7.
Reason (R): \((a+1)(a+7)-a(a+8)=7\).
Select one option. Answers are shown after the test.
Question 2 of 7
Assertion (A): If a product stays unchanged when the first factor is increased by 2 and the second is decreased by 4, then \(b=a+2\).
Reason (R): From \((a+2)(b-4)=ab\), we obtain \(b=2a+4\).
Select one option. Answers are shown after the test.
Question 3 of 7

Assertion (A): \((6n+2)^2-(4n+3)^2\) is always 5 less than a square number.
Reason (R): For \(n=1\), the expression is 15, and \(15+5=20\) is not a square number.

Select one option. Answers are shown after the test.
Question 4 of 7
Assertion (A): \(-3p(-5p+2q)=15p^2-6pq\).
Reason (R): The product of two negative terms is negative.
Select one option. Answers are shown after the test.
Question 5 of 7
Assertion (A): \((2x+3)^2-(2x-3)^2=24x\).
Reason (R): Using the difference-of-squares identity gives \(12x\).
Select one option. Answers are shown after the test.
Question 6 of 7
Assertion (A): \((x-4)^2=x^2-8x+16\).
Reason (R): The middle term in \((x-4)^2\) is \(-4x\).
Select one option. Answers are shown after the test.
Question 7 of 7
Assertion (A): \((p+q)(p-q)=p^2+q^2\).
Reason (R): \((p+q)(p-q)=p^2-q^2\).
Select one option. Answers are shown after the test.