Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.
Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.
Showing 171-180 of 604 questions.
What is the variable part in \(12x^2y\)?
B. \(x^2y\)
संख्या (12) गुणांक है और \(x^2y\) चर भाग है। पद को संख्या और चर भाग में बाँटकर देखें। / The number (12) is the coefficient and \(x^2y\) is the variable part. Split the term into number and variable parts.
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What is obtained after simplifying (4m-(2m-7))?
C. (2m+7)
घटाव का चिन्ह कोष्ठक के अंदर के दोनों पदों के चिन्ह बदलता है। इसलिए (4m-2m+7=2m+7)। / The minus sign before the bracket changes the signs of both terms inside. Thus (4m-2m+7=2m+7).
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How will \(x+x^2+2x\) be written after combining like terms?
A. \(x^2+3x\)
(x) और (2x) समान पद हैं और उनका योग (3x) है। \(x^2\) अलग पद रहेगा। / (x) and (2x) are like terms and their sum is (3x). \(x^2\) remains a separate term.
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In which expression is the coefficient of \(x^2\) equal to (-4)?
D. \(-4x^2+7\)
\(-4x^2+7\) में \(x^2\) के साथ (-4) गुणा हो रहा है। गुणांक चिन्ह सहित लिया जाता है। / In \(-4x^2+7\), \(x^2\) is multiplied by (-4). A coefficient is taken with its sign.
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If (x=2) and (y=3), what is the value of (xy+x)?
A. (8)
\(xy+x=2\cdot3+2=8\)। पहले गुणा करें और फिर जोड़ें। / \(xy+x=2\cdot3+2=8\). Multiply first and then add.
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Which expression is equal to (2a-3b+5a-b)?
B. (7a-4b)
(2a+5a=7a) और (-3b-b=-4b)। समान पदों को अलग-अलग जोड़ें। / (2a+5a=7a) and (-3b-b=-4b). Combine like terms separately.
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How many variables are used in the expression \(3x^2y+4xy^2-5\)?
B. (2)
इस व्यंजक में अलग-अलग चर (x) और (y) हैं। घात बदलने से नया चर नहीं बनता। / The distinct variables in this expression are (x) and (y). Changing powers does not create a new variable.
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What is obtained after simplifying (7(z-1)+2)?
A. (7z-5)
(7(z-1)=7z-7) और फिर (2) जोड़ने पर (7z-5) मिलता है। कोष्ठक खोलने के बाद स्थिर पद जोड़ें। / (7(z-1)=7z-7), and adding (2) gives (7z-5). Add constant terms after expanding brackets.
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Which option is a correct example of unlike terms?
C. \(5s^2\) और (5s)\(5s^2\) and (5s)
\(5s^2\) और (5s) में (s) की घात अलग है। इसलिए ये असमान पद हैं। / In \(5s^2\) and (5s), the power of (s) is different. So they are unlike terms.
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If (k=4), what is the value of \(k^2-2k+3\)?
C. (11)
(42-2(4)+3=16-8+3=11)। मान निकालते समय क्रियाओं का क्रम न भूलें। / (42-2(4)+3=16-8+3=11). Do not forget the order of operations while evaluating.
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