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Class 7 Exam  >  Class 7 Tests  >  Important Questions: Comparing Quantities - Class 7 MCQ

Important Questions: Comparing Quantities - Class 7 MCQ


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20 Questions MCQ Test - Important Questions: Comparing Quantities

Important Questions: Comparing Quantities for Class 7 2024 is part of Class 7 preparation. The Important Questions: Comparing Quantities questions and answers have been prepared according to the Class 7 exam syllabus.The Important Questions: Comparing Quantities MCQs are made for Class 7 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions: Comparing Quantities below.
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Important Questions: Comparing Quantities - Question 1
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Which of the following is correct?

Detailed Solution for Important Questions: Comparing Quantities - Question 1

Let us consider a fraction 3/5 and a rational number = −4/7 By definition, 3/5 is a rational number.
So, p is true. By definition, −4/7 is not a fraction, since, −4  is not a natural number. So, q is false.

Important Questions: Comparing Quantities - Question 2
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Which of the following is not a rational number(s)?

Detailed Solution for Important Questions: Comparing Quantities - Question 2

 

A rational number is defined as the number which can be expressed in the form of p/q, where p and q are integers and q ≠ 0.

√2  is not an integer.

Hence, √2/3 is not a rational number.

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Important Questions: Comparing Quantities - Question 3
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p: All integers are rational numbers.
q: Every rational number is an integer.
Which of the following statements is correct?

Detailed Solution for Important Questions: Comparing Quantities - Question 3

Since, every integer having a denominator 1 can be expressed in P/q  form, p is true.
Since, a rational number with denominator other than 1 is not an integer (e.g., 3/5 ), q is false.

Important Questions: Comparing Quantities - Question 4
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What type of a number is −3/0?
Detailed Solution for Important Questions: Comparing Quantities - Question 4

Since, denominator is 0, it is not a rational number.

Important Questions: Comparing Quantities - Question 5
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Which among the following is a rational number equivalent to 5/3?
Detailed Solution for Important Questions: Comparing Quantities - Question 5

To find an equivalent fraction, you multiply both the numerator and denominator by the same number. In this case, 5/3 multiplied by 5/5 equals 25/15.

Therefore, 25/15 is equivalent to 5/3.

Important Questions: Comparing Quantities - Question 6
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What type of a numerator does 0/7 have?
Detailed Solution for Important Questions: Comparing Quantities - Question 6

Since the numerator is 0, the value of the fraction is 0. 0 is neither a positive nor negative rational number.

Important Questions: Comparing Quantities - Question 7
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Which of the following statements is true?
Important Questions: Comparing Quantities - Question 8
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If  what is the value of x?
Detailed Solution for Important Questions: Comparing Quantities - Question 8

just cross multiply
-4 x X = -32 x 7
X = 8 x 7
X = 56

Important Questions: Comparing Quantities - Question 9
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Which is the greatest?
Detailed Solution for Important Questions: Comparing Quantities - Question 9

Since we know , greater the denominator smaller is the number, but since all numbers are negative, the number nearer to zero will be greatest ,so -5/17 is the greatest number.

Important Questions: Comparing Quantities - Question 10
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Which is the correct descending order of 
Detailed Solution for Important Questions: Comparing Quantities - Question 10

 L.C.M. of 5, 4 and 20 is 20.


 or
 
is the required descending order. Rewrite equivalent fractions of the given fractions and then compare then. Arrange them in descending order.

Important Questions: Comparing Quantities - Question 11
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What is the average of the two middle rational numbers if 4/7,1/3,2/5 and 5/9 are arranged in ascending order?
Detailed Solution for Important Questions: Comparing Quantities - Question 11

The ascending order of 

The two middle numbers are 2/5 and 5/9 
∴  Average 
=

Important Questions: Comparing Quantities - Question 12
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What is the percentage of the least number in the greatest number of 3/5,9/5,1/5  and 7/5 ?
Detailed Solution for Important Questions: Comparing Quantities - Question 12

The given numbers can be arranged in ascending order as 
The greatest number = 9/5; The least number = 1/5  
We have 

Important Questions: Comparing Quantities - Question 13
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What is the difference between the greatest and least numbers of 5/9,1/9 and 11/9 ?
Detailed Solution for Important Questions: Comparing Quantities - Question 13

The ascending order of given numbers is 1/9,5/9,11/9. 
∴  Required difference 11/9−1/9 = 10/9

Important Questions: Comparing Quantities - Question 14
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Which of the following pairs represent the same rational number?
Detailed Solution for Important Questions: Comparing Quantities - Question 14

−24/15  is the equivalent rational number of −8/5.

Important Questions: Comparing Quantities - Question 15
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P: The quotient of two integers is always a rational number.
Q : 1/0 is not rational. Which of the following statements is true?
Detailed Solution for Important Questions: Comparing Quantities - Question 15

Since, 1/0 is not rational, the quotient of two integers is not always rational.

Important Questions: Comparing Quantities - Question 16
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What is the result of   
Detailed Solution for Important Questions: Comparing Quantities - Question 16

Important Questions: Comparing Quantities - Question 17
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Which is the equivalent of -143/21
Important Questions: Comparing Quantities - Question 18
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Of which property   is an example?
Important Questions: Comparing Quantities - Question 19
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Which of the following statements is correct?
Detailed Solution for Important Questions: Comparing Quantities - Question 19

All the given statements are correct. Consider 4/5 [a]
Since  is the additive identity of rational numbers. [b]
Since  is the  multiplicative identity of rational numbers. [c]
Since 0+0 = 0,0 is the additive inverse of 0.

Important Questions: Comparing Quantities - Question 20
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The sum of two rational numbers is −3. If one of the numbers is −7/5, find the other number.
Detailed Solution for Important Questions: Comparing Quantities - Question 20

Let x be the required number. So,  

x+  =−3+ 7/5
= 

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