KVS Librarian Exam Tier 1 Mock Test - 4 Free Online Test 2026

Step 1: Analyze the letters

• First letters: R → V → Z → D → ?

  • Positions in alphabet: R(18), V(22), Z(26), D(4)

  • Pattern: +4 (wrap around after Z back to A)

  • Next first letter: D + 4 = H

• Second letters: O → S → W → A → ?

  • Positions: O(15), S(19), W(23), A(1)

  • Pattern: +4 (wrap around after Z)

  • Next second letter: A + 4 = E

Letters = HE

Step 2: Analyze the numbers

• Series: 33 → 41 → 49 → 05 → ?

• Pattern: +8 each time

  • 33 + 8 = 41

  • 41 + 8 = 49

  • 49 + 8 = 57 → wrapped as 57 − 52 = 05

  • 05 + 8 = 13

Numbers = 13

Step 3: Combine letters and numbers

Next term = HE13 

The codes have been assigned as follows,

Similarly,

Hence, the answer is ‘29183’.

Given equation: 1286 ÷ 4 × 61 × 2 ÷ 2 + 63 – 121.5 = 324

Let’s check each option,

1) Interchanging + and – :
Equation will become 1286 ÷ 4 × 61 × 2 ÷ 2 - 63 + 121.5
= 321.5 × 61 × 1 – 63 + 121.5
= 19611.5 – 63 + 121.5
= 19548.5 + 121.5
= 19670

2) Interchanging × and + :
Equation will become 1286 ÷ 4 + 61 + 2 ÷ 2 × 63 – 121.5
= 321.5 + 61 + 1 × 63 – 121.5
= 321.5 + 61 + 63 – 121.5
= 324

3) Interchanging – and ÷ :
Equation will become 1286 - 4 × 61 × 2 - 2 + 63 ÷ 121.5
= 1286 – 4 × 61 × 2 – 2 + 63 ÷ 121.5
= 1286 – 488 – 2 + 0.52
= 796.52

4) Interchanging + and ÷ :
Equation will become 1286 + 4 × 61 × 2 + 2 ÷ 63 – 121.5
= 1286 + 4 × 61 × 2 + 0.032 – 121.5
= 1286 + 488 + 0.032 – 121.5
= 1652.532
Thus, using option 2, we get correct answer.

The pattern followed here is,

Hence, 30 is the correct answer.

Investment of Niraj = Rs. 250000
Investment of Karan = Rs. 300000
For the respective profit ratio,
Niraj/Karan = (250000 × 12)/ (300000 × 5) = (25 × 12)/ (30 × 5) = 2/1
[∵ Investment depends on time period also]
∴ Profit of Karan = (1/3) × 900000 = Rs. 300000

Pipe A’s 1 hour’s work = 1/20
Pipe B’s 1 hour’s work = 1/30
Pipe C’s 1 hour’s work = 1/15
Pipe (A + B + C)’s 1 hour work
= 1/20 + 1/30 – 1/15
= 1/60
Tank filled in 1 hour = 1/20
Tank filled in the second hour = 1/30
Tank filled in the first two hours = 1/20 + 1/30 = 5/60 = 1/12
Tank remaining empty after two hours = 1 – 1/12 = 11/12
Time taken by three pipes = 11/12 × 60 = 55
∴ Total time required to fill the tank = 2 + 55 = 57 hours for given conditions.

There are two types of buffer-overflows: heap-based and stack-based. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). A stack-based overflow is one in which a stack, implicitly accessed by most operations, is a fundamental part of the programming model.

The process of transferring files from a computer on the Internet to your computer is called FTP.

Uploading is the transmission of a file from one computer system to another, usually larger computer system. From an Internet user's point of view, downloading is receiving a file from another computer. The File Transfer Protocol ( FTP ) is the Internet facility for downloading and uploading files.

Hence the correct option is (B).

Slide notes can be very useful tools for presentation. These notes are not displayed on the screen in the Slideshow mode, but the presenter can see them so they can prepare well to present the slides. Notes are available on the bottom panel of a presentation.

Boot Sector Virus infects the master boot record & it is a challenging & complex task to remove such virus.

Mostly such virus spreads through removable devices.

PDP-11 is a 16-bit minicomputer belonging to the second generation of computers.

• UNIVAC-I was the first commercially produced computer that could perform general-purpose computations for business applications.
  
• ENIAC, short for Electronic Numerical Integrator and Computer, was the basis for the UNIVAC-I computer and had almost similar functionalities.
• IBM-701 was the first commercial scientific computer produced by IBM. It was also known as a defense calculator.

DHCP (Direct Host Configuration Protocol) and TFTP (Trivial File Transfer Protocol) employ a connectionless service model, using the User Datagram Protocol (UDP). While other given protocols (SMTP, HTTP, FTP) use TCP (Transmission Control Protocol) for connection-oriented transfer.

Internet service providing is done by ISP companies like AT&T, Verizon, Comcast, Level 3, Megapath, BSNL.

ISP itself is a service under which the internet comes.

E-mail is a service provided by the internet.

• Electronic mail was invented in 1971 by Ray Tomlinson.

Instant messaging technology is a type of online chat that offers real-time text transmission and the service is provided by the Internet.

Flash memory is a non – volatile memory.

Flash memory is an electronic data storage device used for storing digital information. These are commonly used in portable electronic devices, such as digital cameras, mobile phones, laptop computers, tablets, MP3 players and video game consoles. Due to Flash memory, when the power is turned off, your data is not lost.

Network security audit is a information security audit. A network security audit should include review of following:

1) Firewalls: It should check for firewall configuration and vulnerabilities.

2) Antivirus software: Check that system is virus free. All systems should have updates antivirus software.

3) Password approach: Should check the password policies of company so that there will not be misuse of passwords.

4) Backups: There must be backing up of crucial data in organizations to overcome the loss in case of failure.

5) Active directory: All the information must be saved in a centralized directory. Directory must be managed on regular basis.

• Jamie Chadwick became the first female winner of the MRF Challenge Series at the final event of the season.
• She won 3 of the 5 races in Chennai, India, to close an 18-point margin on Belgium's Max Defourny and take the title.
• She became the first woman to win a British F3 race in August 2018.
• The last woman to start Formula 1 Grand Prix was Lella Lombardi in 1976.

• United Nations Office for Disaster Risk Reduction (UNDRR) conferred Sasakawa Award 2019 for Disaster Risk Reduction to Dr. Pramod Kumar Mishra.
• He is the Additional Principal Secretary to Prime Minister of India.
• The award was announced during the ongoing 6th Session of Global Platform for Disaster Risk Reduction (GPDRR) 2019 at Geneva.

• The resistance of a conductor is given as R=pl/A
  p = Resistivity
  l = Length of conductor
  R = Resistance
  A = Area of a cross-section of the conductor
• Here, the resistance of a conductor is directly proportional to the length of the conductor and inversely proportional to the area of cross-section of the conductor.

• World Tuberculosis Day is observed every year on 24 March.
• The aim of the day is to raise public awareness about the devastating health, social and economic consequences of TB, and to step up efforts to end the global TB epidemic.
• The theme of World TB Day 2019 - ‘It’s time’.
• The World Health Organization (WHO) has launched a joint initiative 'Find. Treat. All. #EndTB'.

The correct answer is '4' i.e. least efficient .

Explanation

• The given sentence is comparing the efficiency of work done in the office.
• When making comparisons, especially with adjectives, we use the comparative degree (e.g., less efficient) or the superlative degree (e.g., least efficient).
• Since the sentence is indicating the lowest degree of efficiency, the correct form to use is the superlative degree (least).
• Among the given options, "least efficient" is the superlative form and correctly completes the sentence.

Correct sentence: Work in this office is done in the least efficient way.

Other Related Points

• Comparative Degree:
  • Usage: Used to compare two entities.
  • Example: This method is less efficient than the other one.
• Superlative Degree:
  • Usage: Used to compare more than two entities and indicate the highest or lowest degree.
  • Example: This is the least efficient method of all.

The correct answer is 'It forms clouds from water vapor.'

Explanation

• Condensation transforms water vapor back into liquid form, making cloud formation possible.
• When warm water vapor rises and cools in the atmosphere, it condenses into tiny droplets.
• These droplets cluster together to form clouds, which are critical for subsequent precipitation.
• Clouds act as the medium through which water returns to the Earth's surface.

Therefore, the correct answer is 'Option 3'.

• The primary issue in the sentence is the use of the preposition "into" instead of "in".
• The correct phrase should be "I used to eat in the evening", ensuring grammatical correctness and clarity.
• Thus, the error is located in Option 2 of the sentence.

• Option 1: "when my parents" – This part of the sentence is grammatically correct and does not require any changes.
• Option 3: "in the evening" – This part of the sentence is grammatically correct and does not require any changes.
• Option 4: "were on night shifts" – This part of the sentence is grammatically correct and does not require any changes.
• No error – This would be the correct option if there were no mistakes in the sentence, but there is an error in Option 2.

The correct answer is  Indistinct.
Explanation

• The word "Evident" means something that is clear or obvious to the mind or eye. (स्पष्ट)
  • Example: It was evident that she was not interested in the conversation.
• "Indistinct" refers to something that is not clear or sharply defined; vague or blurry. (अस्पष्ट)
  • Example: The indistinct shapes in the fog made it hard to see where we were going.
• Hence, we can infer that the opposite of 'Evident' is 'Indistinct'.

Other Related Points

Here are the other options explained along with their Hindi meanings and example sentences:

• Obvious (स्पष्ट): Easily perceived or understood; clear and apparent.
  • Example: It was obvious that he was upset after the meeting.
• Irritable (चिड़चिड़ा): Having or showing a tendency to be easily annoyed or made angry.
  • Example: He became irritable when he was tired.
• Stubborn (जिद्दी): Having or showing dogged determination not to change one's attitude or position on something.
  • Example: She was too stubborn to admit that she was wrong.

“अंधेरे में रखना” का सही अर्थ 'भेद छिपाना' है।

Explanation

• 'अंधेरे में रखना'- भेद छिपाना या पूर्ण सत्य न बतानामुहावरे का वाक्य प्रयोग- आप ने भी मुझे कुछ न बताकर अंधेरे में रखा है।अन्य विकल्प-
• चुप्पी साधना- कुछ न कहना​
  वाक्य प्रयोग- रोहित ने विवाद से बचने के लिए सभा में कुछ नहीं कहा ।
• भेद बताना- राज खोलना
  वाक्य प्रयोग- विभीषण ने रावण को मारने की बात राम को बता कर उसका भेद बता दिया।

Other Related Points

• मुहावरा-सामान्य अर्थ का बोध न कराकर विशेष अथवा विलक्षण अर्थ का बोध कराने वाले पदबंध को ही मुहावरा कहते हैं।
• मुहावरे के प्रयोग से भाषा सरल, सरस, रोचक एवं प्रभावपूर्ण बन जाती है इसके मूल रूप में किसी भी प्रकार का परिवर्तन नहीं किया जा सकता अर्थात इनमें से किसी शब्द का पर्यायवाची शब्द प्रयुक्त नहीं किया जा सकता।
• मुहावरा अरबी भाषा का शब्द है। मुहावरा अपूर्ण वाक्य होता है।
• वाक्य में प्रयोग करते ही यह वाक्य का अभिन्न अंग बन जाता है।

अन्य महत्वपूर्ण मुहावरे:

सही उत्तर 'बेमिसाल - मिसाल सहित' है।

Explanation

• दिए गए विकल्पों में से अनुचित विकल्प 'बेमिसाल - मिसाल सहित' है।
• 'बेमिसाल' शब्द का सही समास विग्रह 'जिसकी मिसाल न हो' होगा।
• यह अव्ययीभाव समास का उदाहरण है।
• आमरण - मरण तक, प्रत्यक्ष - आँखों के सामने, प्रतिदिन - हर दिन ये सभी विकल्प भी अव्ययीभाव समास के उदाहरण हैं
• जिस समास का पहला पद कोई अव्यय (अविकारी शब्द) होता है, उस समास को अव्ययीभाव समास कहते हैं।

दिए गए विकल्पों में से विलोम की दृष्टि से "सम्मुख-उन्मुख" युग्म सुमेलित नहीं है।

Explanation

• अतः 'सम्मुख' उन्मुख शब्द का पर्यायवाची शब्द है, ना कि विलोम l
• सम्मुख का विलोम शब्द - "विमुख"
• शेष विकल्पों में विलोम की दृष्टि से युग्म सुमेलित है।

Other Related Points
विलोम शब्द - जो शब्द किसी दूसरे शब्द का उल्टा अर्थ बताते हैं, उन्हें विलोम शब्द या विपरीतार्थक शब्द या विरुद्धार्थी शब्द कहते है।

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वाक्य के रिक्त स्थान की पूर्ति के लिए उचित 'प्रतिभा' शब्द का समानार्थी शब्द "मेधा" है। अन्य विकल्प असंगत है।
Explanation

• वाक्य- विजय में ________ शक्ति प्रबल है।
• इस वाक्य में रिक्त स्थान की पूर्ति के लिए 'प्रतिभा' शब्द का समानार्थी शब्द "मेधा" का प्रयोग होगा।
• सही वाक्य- विजय में मेधा शक्ति प्रबल है।
• मेधा के अन्य समानार्थी शब्द- बुद्धि, मेघा, प्रज्ञा, जेहन, मति इत्यादि।

अन्य महत्वपूर्ण समानार्थी शब्द-

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सही उत्तर है - स्वयं की समस्याओं की

Explanation

• गद्यांश के अनुसार, हम स्वयं की समस्याओं की चर्चा बढ़ा-चढ़ाकर करते हैं।
• पाठ में कहा गया है कि जब हम समस्याओं का सामना करते हैं, तो हम इन्हें व्यापक रूप से चर्चा करने और बड़ा बनाने की प्रवृत्ति रखते हैं।
• हम दूसरों से सहानुभूति की उम्मीद रखते हैं, लेकिन सहानुभूति या दया से समस्या हल नहीं होती है।

Other Related Points

• हम मुश्किलों के बारे में रोते हैं, लेकिन समाधान के बारे में कभी सोचना नहीं शुरू करते।
• हम ऐसे लगते हैं कि हमारे पास बहुत बड़ी मुसीबत आ गई है और हम हथियार डालने के बाद मान लेते हैं।
• हम दिन-रात उस मुसीबत के बारे में सोचते रहते हैं और समस्या हमारे दिल और दिमाग को पूरी तरह से व्याप्त कर लेती है।
• इस प्रक्रिया में, हम अक्सर अपने द्वारा किए गए कार्यों की मूल्यांकन करना भूल जाते हैं।