24 September 2021 – Reasoning & Maths, First Shift NTA UGC NET JRF Question paper, Answer key

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1. A household incurs a certain expenditure on the consumption of a commodity in a given month. If the price of the commodity decreased by 20% and its consumption increased by 20%, what would be the net percent increase or decrease in the expenditure of the household?

1.2%
2.4%
3.8%
4.10%
एक परिवार किसी दिए गए महीने में किसी वस्तु की खपत पर एक निश्चित व्यय करता है। यदि वस्तु की कीमत में 20% की कमी हो और उसकी खपत में 20% की वृद्धि हो, तो घर के खर्च में शुद्ध प्रतिशत वृद्धि या कमी क्या होगी?

SHOW ANSWER
  Answer (B) is correct.
Explanation- 100 =20%↓(Decrements in Price) = 80
20%↑(Increment in Consumption) = 96.
There is a decrements of 4%

 

2. A man walks at a speed of 3 km/hour from location A towards east for 1 hour and then turning left walks at a speed of 1.5 km/hour for 6 hours towards north to a location B. The shortest distance between locations A and B is:

1. 10 km
2. 12 km
3. ~8.54 km
4. ~9.48 km
एक व्यक्ति स्थान A से पूर्व की ओर 1 घंटे के लिए 3 किमी/घंटा की गति से चलता है और फिर बाएं मुड़कर किसी स्थान B पर उत्तर की ओर 6 घंटे के लिए 1.5 किमी/घंटा की गति से चलता है। स्थानों A और B के बीच की न्यूनतम दूरी है:

SHOW ANSWER
  Answer (D) is correct
Explanation- √9^2 + 3^2 = √87 = approx 9.48

 

3. 20, 10, 30, 68, X find value of X

A 130
B 92
C 88
D 76

SHOW ANSWER
  Answer (A) is correct
Explanation-1^3 + 1 = 1+1 = 2
2^3 + 2 = 8+2 = 10
3^3 + 3 = 27+3 = 30
4^3 + 4 = 64+4 = 68 5^3 + 5 = 125+5 = 130

 

4. Two water pipes can fill a tank in 10 minutes and 15 minutes, respectively, if each of them is used separately. If both the pipes are used to fill the tank simultaneously, how long will it take to fill the tank?

1. 6 minutes
2. 8 minutes
3. 7.5 minutes
4. 9 minutes
दो पानी के पाइप एक टैंक को क्रमशः 10 मिनट और 15 मिनट में भर सकते हैं, यदि उनमें से प्रत्येक का अलग-अलग उपयोग किया जाता है। यदि दोनों पाइपों का उपयोग एक साथ टैंक को भरने के लिए किया जाता है, तो टैंक को भरने में कितना समय लगेगा?

SHOW ANSWER
  Answer (A) is correct
Explanation- LCM of 10, 15= 30 total work
A= 30/10= 3
B= 30/15= 2
Total together= 5
30/5= 6

 

5. A rational number has its denominator greater than its numerator by 6. If the numerator is increased by 4 and the denominator is decreased by 8, the number becomes 5/3. What is the original rational number?

1. 11/17
2. 5/11
3. 7/13
4. 13/19
एक परिमेय संख्या का हर उसके अंश से 6 अधिक होता है। यदि अंश में 4 की वृद्धि होती है और हर में 8 की कमी होती है, तो संख्या 5/3 हो जाती है। मूल परिमेय संख्या क्या है?

SHOW ANSWER
  Answer (A) is correct
Explanation- By options
11/17
15/9= 5/3

 

6. Given below are two propositions:

All philosophers are fallible.
Socrates is not fallible.
In the classical square of opposition, which one of the following is the correct answer?

1. Contrary
2. Contradictory
3. Subalternation
4. Subcontrary
नीचे दो प्रस्ताव दिए गए हैं:
सभी दार्शनिक पतनशील हैं।
सुकरात गिरने योग्य नहीं है।
विरोध के शास्त्रीय वर्ग में, निम्नलिखित में से कौन सा सही उत्तर है?

SHOW ANSWER
  Answer (A) is correct
Explanation- First statement is All denoted by A.
Second statement is No denoted by E.
A and E are contrary to each other.

 

7. acf, egi, ikn, oqt, —

1. suy
2. uvy
3. rwz
4. Uwz

SHOW ANSWER
  Answer (D) is correct
Explanation- Every first letter is a e i o u
In acf, a skip b then skip 2 letters de
In egi, e skip f then skip 1 letter h
In ikn, i skip j then skip 2 letters lm
In oqt, o skip p then skip 1 letters
Next u skip v then skip 2 letters xy it comes uwz

 

Which of following commands are accepted by Vaisheshika philosophy
A. Pratyasha
B. Anumana
C. Shabda
D. Upamana
E. Arthapatti
F. Anupalabdhi
Choose the correct answer.

1. a and b
2. 2. c and d
3. 3. e and f
4. 4. c and e

SHOW ANSWER
  Answer (A) is correct
Explanation- Vaisheshika accepts 2 valid sources of knowledge: Perception (Pratyaksha) and Inference (Anumāna)

 

Which of the following are accepted in Buddhism?
A. Adhyasa
B. Apoha
C. Abhava
D. Arthapatti
E. Pratyaksha
F. Sabda

1. A and B only
2. C and D only
3. B and E only
4. E and F only

SHOW ANSWER
  Answer (C) is correct
Explanation- Buddhism accepts two; perception, inference as valid means and in favor of Apohwad- (Apoh means Contradiction).

 

10. Statement 1: ParaVidya means knowledge that transcends human experience.
Statement 2: AparaVidya means knowledge based on human experience.
Choose most appropriate from below:

A. Both statement I and statement II are true
B. Both statement I and statement II are false
C. Statement 1 is true but statement to is false
D. Statement 1 is false but statement to is true
कथन १: परविद्या का अर्थ है वह ज्ञान जो मानव अनुभव से परे हो।
कथन २: अपराविद्या का अर्थ है मानव अनुभव पर आधारित ज्ञान।
नीचे से सबसे उपयुक्त चुनें:

SHOW ANSWER
  Answer (A) is correct
Explanation- Both these physical and mental activities and also the knowledge earned by them comes under Apara Vidya. Knowledge of them means to accumulate material gains.

 

2 thoughts on “24 September 2021 – Reasoning & Maths, First Shift NTA UGC NET JRF Question paper, Answer key”

  1. Nibedita shyam

    10/10. Mam wo reasoning wala question jo hain 20, 10, 30, 68 usme phle 2 aayega na? Ye question class m bhi hue the.
    Baat ye hain ki aap ne ye sara shift wala questions special class, plus class, yt class mein itni baar karwaya hain ki neend m bhi ans de denge hum iska. Love u😘.

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