JK Police Constable Mock Test - 5 - JK Police Constable MCQ

Given:

x + 1/3x = 5

Formula used:

(a + b)³ = a³ + b³ + 3 × a × b × (a + b)

Calculation:

x + 1/3x = 5

Multiplying both sides by 3, we get

⇒ 3x + 1/x = 15

Now,

Taking the cube on both sides,

⇒ (3x)³ + 1/x³ = (15)³

⇒ 27x³ + 1/x³ + 3 × (3x) × (1/x) × (3x + 1/x) = 3375

⇒ 27x³ + 1/x³ = 3375 – 3 × 3 × 15

⇒ 27x3 + 1/x3 = 3375 – 135

⇒ 27x3 + 1/x3 = 3240

∴ The required value is 3240

The Correct Answer is Farsi.

In News

• Farsi as India’s New Classical Language.

Key Points

• In a noteworthy development aimed at strengthening cultural ties, the Government of India, under the New Education Policy, has decided to include Farsi (Persian) as one of the ninth classical languages of India.
• This announcement was made by External Affairs Minister S Jaishankar during a two-day visit to Iran, highlighting the cultural, literary, and linguistic connections between Iran and India​​​.
• Farsi, also known as Persian, is an Indo-Iranian language belonging to the Iranian branch of the Indo-Iranian languages.
• Before Farsi’s inclusion, India recognized six languages as classical: Tamil (2004), Sanskrit (2005), Kannada (2008), Telugu (2008), Malayalam (2013), and Odia (2014).
• The criteria for declaring a language as ‘Classical’ include a recorded history of 1500–2000 years, a valuable heritage of ancient literature, an original literary tradition, and distinctness from modern forms or offshoots​​​.

The correct answer is 'enjoyed the book that'.

Key Points

• The most appropriate option to substitute the underlined segment is: enjoyed the book that.
• The original sentence, "I thoroughly enjoyed a book that you gave me," uses the definite article 'the' before "book" to refer to a specific book previously mentioned or known between the speaker and the listener.
• Here's the revised sentence using the correct form: "I thoroughly enjoyed the book that you gave me; its compelling storyline kept me hooked till the very end."
• The change maintains the specificity of the book being referred to, thus using the definite article 'the' to indicate a particular book given by the listener.

The correct answer is Cotton.

Key Points

• Regur soil is black in colour and it is also known as ‘black soils’.
  • They are perfect for growing cotton, they are also called cotton soils.
  • These soils are most characteristic of the Deccan trap (Basalt) region, spread over the north-west Deccan plateau and are made up of lava flows.
  • They cover the plateaus of Maharashtra, Saurashtra, Malwa and southern Madhya Pradesh and continue eastwards in the south, along the Godavari River and Krishna River Valleys.
  • Owing to the high proportion of clay, Regur soils are sticky when wet and consequently becomes difficult to plough.
  • They are well-known for their ability to retain moisture.
  • They are prosperous in soil nutrients, like calcium carbonate, magnesium carbonate, potash and lime.
  • They are usually poor in phosphoric content.
  • They develop thick fissures in the field during hot weather. This helps in their ventilation.
  • This soil is viscous and unmanageable to work unless tilled without delay, after the first or pre-monsoon showers.

Given:

The area of rectangle = 252 cm²

Ratio of length and breadth = 9 : 7

Formula used:

Area of rectangle = length × breadth

Perimeter of rectangle = 2(l + b)

Calculation:

Let the length and breadth of rectangle be l and b respectively

⇒ l : b = 9 : 7

⇒ l = 9b/7 ...(1)

Area of rectangle = 252 cm²

⇒ l × b = 252 cm² .....(2)

Solving equation (1) and (2) we get,

⇒ (9b/7) × b = 252

⇒ (b)² = 252 × 7/9 = 196

⇒ b = 14 cm

Put the value of b in equation (1) we get,

⇒ l = (9 × 14)/7 cm

⇒ l = 126/7 = 18 cm

Now,

Perimeter of rectangle = 2(18 + 14) cm

⇒ 64 cm

∴ Perimeter of rectangle is 64 cm

The correct answer is Chemical energy.

Key Points

• No chemical reaction or substance is there while riding a bicycle, hence no chemical energy.
• Heat energy is produced while riding the bicycle due to the friction between the tires and the surface of the road.
• Chemical energy does not come into the picture while riding a bicycle.
• The energy stored in the bonds of a chemical substance is termed it's Chemical energy.
• It is the energy that allows a substance to undergo a chemical reaction and transform it into other substance(s).
• Mechanical energy is a combination of kinetic and potential energy. The energy by virtue of motion is termed Kinetic energy and the energy possessed by virtue of a stationary position is termed potential energy. Since the bicycle is in motion hence, Kinetic energy is present and also Mechanical energy. [in this case, kinetic energy is equal to the mechanical energy, since potential energy is zero].

GIVEN:

Ratio of two numbers = 5 : 7

H.CF = 3

FORMULA USED:

Product of two numbers = H.C.F × L.C.M.

Suppose if the given H.C.F is a

And if the numbers are in the ratio p : q

Then the required numbers =( p × a) and (q × a)

CALCULATION:

Here, the ratio of the numbers are 5 and 7 and their H.C.F = 3

So,

The numbers = 5 × 3 = 15 and second number = 7 × 3 = 21

Now, we know that

Product of two numbers = H.C.F × L.C.M

⇒ 15 × 21 = 3 × L.C.M

L.C.M = 105

Hence, the required L.C.M is 105.

The correct answer is "Linux".

• Open-source Operating System means the source code of the software is made available by the authors.

Key Points

• It is done so that people can view that code, learn from it, copy from it, alter it or share it with someone.
• It is released with a license and the author holds its copyright.
• The commonly used open-source software is Apache HTTP server, browsers like Mozilla Firefox, and Google Chrome Libreoffice.
• One of the most successful open-source software is the Linux operating system.
• Firefox, Chrome, OpenOffice, Linux, and Android are some popular examples of open-source software, while Microsoft Windows is probably the most popular piece of closed-source software out there.

The correct answer is .docx.
Key Points

• The extension for an MS Word 2007 file is .docx.
• Microsoft Word is a word processor developed by Microsoft.
• It was released on October 25, 1983, under the name Multi-Tool Word for Xenix system.
• The commercial version of Word is licensed as a standalone product or as a component of Microsoft Office or Windows RT.

Additional Information

The correct answer Raghunath.

Key Points

• Raghunath Temple is a Hindu temple located at Jammu in Jammu and Kashmir.
• The Raghunath temple consists of a complex of seven Hindu shrines with each having a Shikhar (spire) of its own.
• The temple is dedicated to Lord Rama as an incarnation of Lord Vishnu.
• The temple consists of gold sheets that cover the inner three sides of the temple.
• The construction work of the Raghunath temple was initiated by the Dogra ruler Maharaja Gulab Singh in the year 1835.
• Maharaja Ranbir Singh(son of Maharaja Gulab Singh) completed it in the year 1860 during Dogra's rule.
• The paintings in the shrine are based on themes from Ramayana, Mahabharata, and Bhagavad Gita.
• A portrait of Maharana Ranbir Singh and an image of Lord Hanuman exaggerate at the very entrance of the temple.
• Glimpses of Mughal masonry can be visualized in the architectural splendor of Raghunath Temple.
• The temple witnessed two terrorist attacks in the year 2002.

Additional Information

• Akshardham is a Hindu temple in New Delhi.
• Birla Mandir refers to different Hindu temples built by the Birla family, in different cities across India.
• Dilwara Temples are a group of Jain temples located in Rajasthan.

The correct answer is 'who spend longer'.
Key Points

• The given sentence is in the present tense as is clear from the helping verb 'has'.
• Therefore, we cannot use v2 i.e. spent.
• If a subject and the verb are joined by a relative pronoun, the verb will agree with the antecedent to the relative pronoun.
  • E.g. He is one of the bravest soldiers that have ever lived on this earth.
• According to the rule and example that are given above, 'who spend longer' will be used in the underlined part of the sentence.

Correct Sentence: Loneliness has become increasingly prevalent among adolescents, who spend longer and longer periods of time online.
Hinglish

• दिया गया वाक्य present tense में है जैसा कि helping verb 'has' से स्पष्ट है।
• इसलिए, हम v2 यानी spent का उपयोग नहीं कर सकते हैं।
• यदि किसी subject और verb को एक relative pronoun से जोड़ा जाता है, तो verb relative pronoun के antecedent के साथ सहमत होगी।
  • E.g. He is one of the bravest soldiers that have ever lived on this earth.
• ऊपर दिए गए नियम और उदाहरण के अनुसार, वाक्य के underlined भाग में 'who spend longer' का उपयोग किया जाएगा।

• Vitamin K is a vitamin found in leafy green vegetables, broccoli, and Brussels sprouts.
• In the body, vitamin K plays a major role in blood clotting. So it is used to reverse the effects of “blood-thinning” medications when too much is given; to prevent clotting problems in newborns who don’t have enough vitamin K, and to treat bleeding caused by medications.

Tricks:

The correct answer is Hard Disk
Additional Information

• A hard disk drive (HDD), hard disk, hard drive or fixed disk is a data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks (platters) coated with magnetic material.
• The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces

The correct answer is NAND

Key Points

• All of the options listed are examples of logical operators that can be used in Boolean Algebra. However, among these options—AND, OR, NOT, and NAND—the first three (AND, OR, NOT) are usually referred to as the basic or fundamental logical operators. These are the operators from which all other logical operations can be derived.
• Therefore, NAND is not considered a basic logical operator. It's a compound logical operator that can be constructed from AND and NOT operators (it essentially means "not AND").

The correct option is (D)
Graphic Card
Concept:-

The circuit board of a computer system is referred to as the motherboard, often known as the mainboard or logic board. The ROM, CPU, RAM, BIOS Chip, CMOS Battery, and other components are all connected to the motherboard via various connections. The motherboard acts as the system's building block when it first starts to run.
Key Points

• The motherboard, the biggest part of the computer system, is in charge of connecting and regulating all other parts.
• One or more processor Cores are included on an integrated circuit known as a processor Chip, commonly referred to as a "CPU."
• The motherboard's BIOS settings are kept in memory by the CMOS battery. The CMOS battery has the ability to store data and time as well.
• A non-volatile microchip inserted on the computer's motherboard called a BIOS chip frequently houses the basic input/output system (BIOS) of the device.
• Graphic card analyzes and processes data using complex graphical features, functions, and techniques to provide a high-quality visual presentation. The purpose of a graphic card is to render graphics.
• Our computer cannot show any information or perform as we need it to without a graphic card.

The correct answer is Chenab Bridge.

• The Indian Railways has planned to build Chenab Bridge in Jammu and Kashmir by the year 2016, which will be the world's highest railway bridge.

Key Points

• Chenab Bridge:
  • It is the world's highest railway bridge.
  • It is being constructed by Indian Railways.
  • It is part of the Udhampur-Srinagar-Baramulla rail link project (USBRL).
  • The Chenab bridge project was declared as a Project of National Importance in March 2002.
  • The length of the bridge is 1,315-metre and its height is 359 metres above the river bed level.

Additional Information

• Indian Railways:
  • Indian Railway Board was established in March 1905.
  • Indian Railway was nationalised in 1950.
  • Railways have been divided into 19 zones.
  • The first Indian railway line in India was operated for public traffic in 1853 between Mumbai and Thane over a distance of 34 km.
  • Ashwini Vaishnaw is the current Minister of Railways.
  • The first electric train in India was ‘Deccan Queen’.
• It was introduced in 1929 between Bombay and Poona

The correct answer is The girl said to her mother, “I have high fever since morning.”
Key Points

• The given sentence is in Indirect Speech. As per the question, we have to change it into Direct Speech.
• The process of transformation is as follows:
  • 'Told' will be changed into 'said to'.
  • Comma and inverted commas will be inserted.
  • The conjunction 'that' will be removed.
  • The first person (I/We) changes according to the subject and the second person (You) changes according to the object.
  • Past tense will be change into the present tense.
    • 'Have' will be changed into 'had'.

Correct sentence: The girl said to her mother, “I have high fever since morning.”
Additional Information

• If the reporting verb is in past tense and the reported speech is not an idiom/phrase/universal truth/routine/historical fact etc., the following changes will take place in the tense, time, and place of the reported speech.​

Hinglish

• दिया गया वाक्य Indirect Speech में है । प्रश्न के अनुसार, हमें इसे Direct Speech में बदलना होगा।
• परिवर्तन की प्रक्रिया इस प्रकार है:
  • 'Told' को 'said to' में बदल दिया जाएगा।
  • Comma और inverted commas डाले जाएंगे।
  • conjunction 'that' हटा दिया जाएगा।
  • first person (I/We), subject के अनुसार बदलता है और second person (You), object के अनुसार बदलता है।
  • Past tense, present tense में परिवर्तित होगा।
    • 'Have' में 'had' बदल जाएगा।

The correct answer is option A, i.e Alkali Metals.

• The elements in the first group of s-block are also known as Alkali Metals. These have only one electron in their outermost shell and hence are quite reactive as they easily lose their electron to form bonds with non-metals.

Important Point

• The elements in the second group of s-block are also known as Alkaline Earth Metals. These have two electrons in their outermost shell and are less reactive than Alkali metals.
• Halogens are the group 17 elements and are placed in the p-block.
• Noble gases are the group 18 elements and are placed in the p-block. These are the least reactive amongst all the elements found in the periodic table as they have a stable configuration.

The correct answer is 1956. Key Points

• The constitution was adopted on 17 November 1956 and came into effect on 26 January 1957.
• Article 370 of the Constitution of India was a “temporary provision” that granted the state of Jammu and Kashmir a special autonomous status within the Indian union.
• Under Article 370(1)(b), the Union Parliament can only make laws for the state, “in consultation with the Government of the State,” on certain matters that were specified in the Instrument of Accession – namely defense, foreign affairs, and communications.
• Article 370(1)(d) states that other constitutional provisions may be applied to the state from time to time, “subject to such modifications or exceptions” made by the president of India, also through a presidential order, as long as they do not fall within the matters referred to above and except with the concurrence of the state government.

Additional Information

• The Special status for Jammu and Kashmir was removed on 5 August 2019 replacing the extant text of Article 370.
• Jammu and Kashmir and proposed that the state be bifurcated into two union territories, Jammu and Kashmir and Ladakh.

• Calcium hydroxide is sparingly soluble in water producing an alkaline solution known as limewater.
• Calcium Carbonate is a chemical compound found commonly in rocks as minerals and is the main component of pearls and the shells of marine organisms, eggs, etc.
• When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate.
• In the chemical reaction it can be shown as :

• However, when an excess of CO2 ​is passed through this solution, the milkiness disappears. This is due to the formation of calcium bicarbonate which is colorless and soluble in water.

Additional Information
Reaction involved-

CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O

• The evolved gas is carbon dioxide which then passes through lime water and turns it milky.

Ca(OH)₂ + CO₂ → H₂O + CaCO₃

• Due to formation of these compounds
• when excess CO₂ is passed

CaCO₃ + H₂O + CO₂ → Ca(HCO₃)₂

• Bicarbonate is formed which again clears the solution

Mistake Points

• Do not confuse Calcium carbonate and calcium bicarbonate.
• One produces white colour while the other makes it colourless.

The correct answer is 'Pathology.'
Key Points

• Let's see the meanings of the given words:-
  • Anthology - A published collection of poems or other pieces of writing.​
    • Example: We have put together an anthology of children's poetry.
  • Pathology - The scientific study of diseases of the body.
    • Example: The postmortem was done in the pathology department of the Perth hospital.
  • Neurology - The scientific study of nerves and their diseases.
    • Example: She has special interests in adult neurology.
  • Etymology - The study of the origins and history of words and their meanings.
    • Example: His account of their arrival and his etymology for their name can not be trusted.

Hence, the correct answer is option B.

The correct answer is "preferably".
Key Points

• The most appropriate option to fill in the blank is "preferably".
• "Preferably" is an adverb and fits perfectly in this context.
• It modifies the verb 'come' by suggesting a more desirable way of performing that action.
• It means 'ideally' or 'if possible', suggesting that the preferred situation would be for the person to come as early as possible.

Therefore, the correct answer is "Option B".
Complete Sentence: Come to my house tomorrow preferably as early as possible.

The correct solution is 'anybody'.
Key Points

• A determiner is a word that is used to modify or introduce the noun in a sentence. It mostly acts like an adjective in that it refers to the noun.
• In the sentence given in the question, the subject of the sentence is 'You' and the object of the sentence which is also a noun is 'want'.
• Since the noun 'want' in the sentence indicates 'people to be invited to the birthday', the most appropriate word would be 'anybody'.
  • Option A, 'anywhere' is incorrect as it is not appropriate to refer to a person.
  • Option C, 'something' is also incorrect as it is also inapprpriate to use it to refer to a person.
  • Option D, 'anything' is an incorrect option as it is used to refer to an object not a person.
• Hence the corret answer is Option B.

Given:

Salary of Kabir : Salary of Vicky = 5 : 2

Increment in Kabir's salary = 20%

Increment in Vicky's salary = 12%

Concept used:

Increased salary = original salary × (100 + increment)%

Calculation:

Salary of Kabir : Salary of Vicky = 5 : 2

Increased salary of Kabir : Increased salary of Vicky = 5 × 120% : 2 × 112%

⇒ 600 : 224 = 75 : 28

∴ The correct answer is 75 : 28.

The positions of the letters according to the English alphabet series:

The pattern for this is as follows;

Similarly;

Hence, the correct answer is "MV".

Given:

S.P. of an article = Rs. 2300

Gain% = 25%

Formula used:

C.P. = (S.P. × 100)/(100 + gain%)

Loss % = (Loss/C.P.) × 100%

Calculation:

C.P. of article = 2300 × 100/(100 + 25) = Rs. 1840

If the article is sold for Rs.1955, profit = 1955 – 1840 = 115

∴ Gain percent = 115/1840 × 100 = 6.25%

Shortcut TrickGain% = 25% = 1/4

Ratio of C.P. to S.P. = 4 : 5

⇒ 5 units = 2300

⇒ 4 units = (2300/5) × 4 = Rs. 1840

If S.P. = Rs.1955, then Profit = 1955 - 1840 = 115

∴ Gain percent = 115/1840 × 100 = 6.25%

Given:

The ratio of Girls : Boys = 2 : 7

Calculation:

Let number of Girls be 2X

And number of Boys be 7X

Increased number of Girls = 2X × 1.15 (15% increase)

Increased number of Boys = 7X × 1.2 (20% increase)

New ratio will be,

Girls : Boys = 2X × 1.15 : 7X × 1.2

⇒ 23 : 84

∴ The new ratio of Girls : Boys = 23 : 84

The correct answer is Rouf.

Key Points

• Rouf is a popular and main folk dance of Jammu and Kashmir performed by women of the Kashmiri community.
• It is performed with the intriguing footwork carefully resonating with one another.
• Traditional Kashmiri Dress is worn while performing the Rouf dance.
• Rouf dance pronunciation- Rouf is pronounced as 'Ruf' in Srinagar while in other parts of Kashmir, Rouf is pronounced as 'Row'.
• Rouf folk dance of Jammu and Kashmir is performed primarily on special occasions- Eid-ul-Fitr, on some Cultural events, Harvest Season, and on other festive seasons.
• The dance is initially associated with the harvest, however, at present, it has become the trademark dance of Jammu and Kashmir.

Additional Information

• Sattriya or Sattriya Nritya is a major Indian classical dance.
  • It is a dance-drama performance art with origins in the Krishna-centered Vaishnavism monasteries of Assam and attributed to the 15th-century Bhakti movement scholar and saint Mahapurush Srimanta Sankardev.
• Kuchipudi is one of the eight major Indian classical dances.
  • It originated in a village named Kuchipudi in the Indian state of Andhra Pradesh.
  • Kuchipudi is a dance-drama performance, with its roots in the ancient Hindu Sanskrit text of Natya Shastra.
• Kathak is one of the eight major forms of Indian classical dance.
  • The origin of Kathak is traditionally attributed to the traveling bards of ancient northern India known as Kathakars or storytellers.

The correct answer is the International Monetary Fund.

• The IMF was conceived at the United Nations Conference in July 1944 at Bretton Woods, New Hampshire, United States.
• The IMF was formally formed on 27 December 1945.
• The member nation of the World Bank automatically becomes a member of the IMF.
• The IMF is an international financial institution that monitors the global economic situation of its member countries.

Key Points

The correct answer is man has.
Key Points

• Many a (formal): used with a singular noun and singular verb to mean a large number of’:
  Ex: Many a man comes to the late-night party that is organized by our chief secretary.
• considering the above rule, we can say that many a man has is the correct structure of the sentence.
• Hence, option B is the correct answer.

Thus the correct sentence is: Many a good man has been destroyed by drink.