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zero comparison MCQ Questions for Class 11
zero comparison se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.
Practice Questions
3 questions tagged with zero comparison.
असमानता \(21-7x\le 0\) का हल क्या है?
What is the solution of the inequality \(21-7x\le 0\)?
#linear inequalities
#zero comparison
#negative coefficient
A \(x\ge 3\)
B \(x\le 3\)
C (x>3)
D (x<3)
Explanation opens after your attempt
Correct Answer
A. \(x\ge 3\)
Step 1
Concept
From \(21-7x\le 0\), we get \(-7x\le -21\), so \(x\ge 3\). The direction changes when dividing by a negative number.
Step 2
Why this answer is correct
The correct answer is A. \(x\ge 3\). From \(21-7x\le 0\), we get \(-7x\le -21\), so \(x\ge 3\). The direction changes when dividing by a negative number.
Step 3
Exam Tip
\(21-7x\le 0\) से \(-7x\le -21\), इसलिए \(x\ge 3\)। ऋणात्मक से भाग देने पर दिशा बदलती है।
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असमानता \(6-2x\ge 0\) का हल क्या है?
What is the solution of the inequality \(6-2x\ge 0\)?
#linear inequalities
#zero comparison
#sign reversal
A \(x\le 3\)
B \(x\ge 3\)
C (x<3)
D (x>3)
Explanation opens after your attempt
Correct Answer
A. \(x\le 3\)
Step 1
Concept
We get \(-2x\ge -6\), so division by (-2) gives \(x\le 3\). Reverse the sign while dividing by a negative number.
Step 2
Why this answer is correct
The correct answer is A. \(x\le 3\). We get \(-2x\ge -6\), so division by (-2) gives \(x\le 3\). Reverse the sign while dividing by a negative number.
Step 3
Exam Tip
\(-2x\ge -6\), इसलिए (-2) से भाग देने पर \(x\le 3\)। ऋणात्मक से भाग देते समय चिह्न पलटें।
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असमानता (9-3x>0) का हल क्या है?
What is the solution of the inequality (9-3x>0)?
#linear inequalities
#zero comparison
#sign reversal
A (x<3)
B (x>3)
C \(x\le 3\)
D \(x\ge 3\)
Explanation opens after your attempt
Step 1
Concept
From (9-3x>0), we get (-3x>-9), so division by (-3) gives (x<3). Reversing the sign is necessary in negative division.
Step 2
Why this answer is correct
The correct answer is A. (x<3). From (9-3x>0), we get (-3x>-9), so division by (-3) gives (x<3). Reversing the sign is necessary in negative division.
Step 3
Exam Tip
(9-3x>0) से (-3x>-9), इसलिए (-3) से भाग देने पर (x<3)। ऋणात्मक भाग में चिह्न पलटना जरूरी है।
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