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CBSE Class 8 Mathematics · Ch 2: Power Play

CBSE Class 8 Mathematics · Ch 2: Power Play is an online chapter test in the CBSE Class 8 pattern, covering Power Play. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.

30
Questions
20
Minutes
30
Marks
None
Negative marking
Unlock all 18 tests — ₹99Try English · Ch 1: The Wit that Won Hearts free →

Topics in this test

TopicQuestions
Power Play30

Difficulty: 7 medium · 23 hard

Power Play MCQ questions with answers

The first 3 of 30 questions. Unlock the series for the rest, each with a solution.

  1. Q1. The value of $(3\times10^{-5})\times(2\times10^{8})$ as an ordinary number is:

    $(3\times10^{-5})\times(2\times10^{8})$ का मान एक साधारण संख्या के रूप में है:

    • A. $0.0006$
    • B. $600$
    • C. $60000$
    • D. $6000$
    Solution

    Multiply the numbers $3\times2=6$ and add the powers of ten $-5+8=3$, giving $6\times10^{3}=6000$.

    संख्याओं को गुणा करें $3\times2=6$ और दस की घातों को जोड़ें $-5+8=3$, जिससे $6\times10^{3}=6000$ प्राप्त होता है।

  2. Q2. If $2^{x}=\dfrac{1}{32}$, then the value of $x$ is:

    यदि $2^{x}=\dfrac{1}{32}$ है, तो $x$ का मान है:

    • A. $\dfrac{1}{5}$
    • B. $5$
    • C. $-5$
    • D. $-6$
    Solution

    Since $32=2^{5}$, we have $\frac{1}{32}=2^{-5}$, so $x=-5$.

    चूँकि $32=2^{5}$, इसलिए $\frac{1}{32}=2^{-5}$, अतः $x=-5$।

  3. Q3. Which of the following is the odd one out (does NOT equal $1$)?

    निम्नलिखित में से कौन-सा बेमेल है (जो $1$ के बराबर नहीं है)?

    • A. $3^{0}$
    • B. $5^{2}\times5^{-3}$
    • C. $(-1)^{100}$
    • D. $2^{-1}\times2$
    Solution

    $5^{2}\times5^{-3}=5^{-1}=\frac{1}{5}$, while all the others simplify to $1$.

    $5^{2}\times5^{-3}=5^{-1}=\frac{1}{5}$, जबकि अन्य सभी सरल होकर $1$ बनते हैं।

Frequently asked questions

How many questions are in the CBSE Class 8 Mathematics · Ch 2: Power Play?

30 questions for 30 marks, to be answered in 20 minutes.

Is there negative marking in the CBSE Class 8 Mathematics · Ch 2: Power Play?

No — wrong answers are not penalised in this test.

Which topics does the CBSE Class 8 Mathematics · Ch 2: Power Play cover?

Power Play (30 questions).

Is the CBSE Class 8 Mathematics · Ch 2: Power Play free?

It is part of the CBSE Class 8 Test Series 2027 — Chapter-wise + Full Tests (18 tests, ₹99). You can first try English · Ch 1: The Wit that Won Hearts for free.

More tests in the CBSE Class 8 Test Series 2027 — Chapter-wise + Full Tests

See the full CBSE Class 8 Test Series 2027 — Chapter-wise + Full Tests → · CBSE Class 8: pattern, notification & syllabus →

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Power Play MCQ Questions with Answers | CBSE Class 8 | SeatBeat