Indian Navy Agniveer Mock Test - 2 - Indian Navy Agniveer MCQ

The correct answer is 'the, a'.

Key Points

• We need to use the correct article in the given blanks.
• For the first blank
  • The identity of the noun tiger following the blank is known.
  • We use the definite article 'the' with any noun (whether singular or plural, count or noncount) when the specific identity of the noun is known to us.
  • So, the definite article 'the' is the correct option for the first blank.
• For the second blank
  • The noun animal is a singular count noun which is general in nature.
  • We use the indefinite article a or an with any singular noun when it is general in nature.
  • Also the indefinite article comes before an adjective that is followed by a singular, countable noun.
    • In the given case the singular countable noun animal is preceded by the adjectives fierce and wild.
  • In this case the use of a/an depends on the first sound of the adjective, not the noun that comes after it.
  • Since the adjective fierce begins with the consonant sound 'f', we need to use the article a.
  • So, the indefinite article a is the correct option for the second blank.
• Hence, option 2 is the correct answer.
  

Complete sentence - " The tiger is a fierce wild animal".

The correct answer is option 1) i.e. Traitor.

 Key Points

• The word 'Renegade' means a person who abandons a cause or organization usually without right.
• The synonyms of the given word 'Renegade' are "traitor, betrayer, double-crosser, quisling".
• The antonyms of the given word 'Renegade' are "loyalist, adherent, disciple, follower".
• The synonym of the given word 'Renegade' is 'Traitor' since both have a similar meaning.
• The word 'Traitor' means one who betrays a trust or an allegiance
• Hence, the correct answer is ' Traitor '.
• ​​​Let's look at the meaning of the other given options-
  
  Additional Information
• Example of 'Renegade' in a sentence:
  • It is heartbreaking to see a renegade country like Libya shoot pro-democracy protesters.

The correct answer is - 'Comely'
Key Points

• 'Comely' is an 'adjective' which means 'pleasant to look at; attractive (typically used of a woman)'
  • Example: the comely Italian actress Valeria Golino

Hence 'Pleasing in appearance' is 'Comely'

Additional Information

• The synonyms of the word 'Comely' are 'sightly, beautiful, bonnie, fair, bonny'
• The antonyms of the word 'Comely' are 'ugly, unflattering, improperly, dirty, indecent'

The correct answer is option 1)

Key Points

• In imperative sentences, 'said to' is changed to 'ordered, requested, suggested, commanded, advised, forbade, warned, etc.' as per the context of the sentence.
• Here, it seems to be an advise, so 'advised' is used..
• The conjunction 'to' is used after the reported verb in imperative sentences.
• After 'to', the first form of the verb is used, i.e. V₁. So, write 'to speak'.
  

The correct sentence is: My Brother advised me to always speak the truth.

The correct answer is 'ought to'.

Key Points

• 'ought to' is used to say what somebody should do.
• Hence, as per the context of the sentence 'ought to' will come in the bank
• 'may' express possibility. (might is in the past tense)
• 'could' is used to indicate possibility.

Hence, the correct answer is Option 4.

The correct answer is - 'Certitude'
Key Points

• 'Certitude' is a 'noun' which means 'absolute certainty or conviction that something is the case'
  • Example: The question may never be answered with certitude

Hence 'Something that is certain to happen' is 'Certitude'

Additional Information

• The synonyms of the word 'Certitude' are 'overconfidence, certainty, cocksureness'
• The antonyms of the word 'Certitude' are 'uncertainty, certain, unsure, sure'

The correct answer is 'The clock had been stolen by the Slaters from his room thinking that he had died'.

Key Points

• The instructions given below should be followed while changing an assertive sentence to passive voice.
  • Find the subject and object of the sentence and exchange their places; make changes in their cases as well if subject and object are pronouns.
  • Use preposition 'by' before the agent. (by the Slaters)
  • Use an appropriate helping verb in passive form according to the tense of the active form. (Past Perfect Tense - had + been)
  • Always use the third form of the main verb in passive form. (Stolen)
  • At last, line up the remaining part.

Final sentence: The clock had been stolen by the Slaters from his room thinking that he had died.

• Passive voice में assertive sentence को बदलते समय नीचे दिए गए निर्देशों का पालन किया जाना चाहिए।
  • वाक्य के subject और object का पता लगाएं और उनके स्थानों को बदले; यदि उनके subject और object pronoun हैं, तो उनके cases में भी बदलाव करें।
  • Agent से पहले preposition 'by' का उपयोग करें। (by the Slaters) (स्लेटर्स द्वारा)
  • Active voice के tense के अनुसार passive voice में एक उपयुक्त helping verb का उपयोग करें। (Past Perfect Tense - had + been)
  • हमेशा main verb के third form का प्रयोग passive voice में करें। (Stolen)
  • अंत में, शेष भाग को व्यवस्थित करें।

The sentence has no errors.

Key Points

• The correct response is: D (No Error)
• Let's analyze each underlined part of the sentence:
  • (a) She didn't: This part of the sentence is correct. "Didn't" is the contraction of "did not," indicating the negative past tense of the verb "to do."
  • (b) tell anybody: This part of the sentence is correct. The verb "tell" is used correctly, indicating the action of conveying information to someone. "Anybody" is a pronoun used to refer to an unspecified person or people.
  • (c) about her plans: This part of the sentence is correct. The preposition "about" is appropriately used to indicate the topic or subject of the information being conveyed. In this case, it specifies that she did not disclose information about her plans.
  • (d) No Error: This option indicates that there is no error in the given sentence.
  • Therefore, the sentence is grammatically correct, and there are no errors in any of the underlined parts (a), (b), or (c).

The correct answer is 'Instead'.

Key Points

• Let's understand the context.
• It is being advised to not help a friend copy in the exams. An alternative way of helping is being suggested which is to help them prepare for the exams.
• Now, let's look at the options one by one.
  • Option 1-
    • In addition means along with, besides. It is used when something is included along with other. Two or more things happen together, we use 'in addition'.
    • For example :- In addition to meals, they also served snacks.
  • Option 2-
    • Meanwhile means at the same time, but happening elsewhere or during the time that something is happening.
    • For example :- The kids played in the park meanwhile, elders cooked food.
  • Option 3-
    • instead means in place of something; as an alternative or substitute.
    • For example :- I was going to study, but I watched television instead.
  • Option 4-
    • in the same way means similarly, likewise, exactly alike
    • For example :- All the houses in this city is planned in the same way.
• The second sentence in the question is the suggested alternative to the action performed in the first sentence. One should stop the practice of helping a friend by letting him copy in the exams. Alternative suggested here is to help them prepare for the exams. Therefore, instead is the most suitable word from the option.

The correct sentence is - Don't help your friend copy your paper in the exams. Instead help them when you prepare for exams.

Concept:

• The power P of a lens is defined as
• Where f is the focal length of the lens.
• The SI unit of power of a lens is m^-1 and is known as Diopter.
• The focal length of a converging lens is positive and that of a diverging lens is negative. Thus, the power of a converging lens is positive and that of a diverging lens is negative.
• The power of the combination of two lenses is P = P₁ + P₂

Calculation:

Given data,

The first lens is the convex lens, and the convex lens is the converging lens. So, the focal length and the power of the lens is positive

Focal length of 1st lens, f₁ = 25 cm = 0.25 m,

Now, the power of the first lens,

Now, the second lens is the concave lens, and the concave lens is the diverging lens. So, the focal length and the power of the lens is negative.

Focal length of 2nd lens, f₂ = -25 cm = -0.25 m,

Now, the power of the second lens,

The power (in diopters) of the combination, P = P₁ + P₂

⇒ P = 4 - 4 = 0 D

The correct answer is Jaime Ferran.

Key Points

• Ferrán was the original developer of the preparation of the cholera vaccine.
• In1885, a vaccine composed of live attenuated bacteria was first inoculated in humans. This event took place in Valencia during an epidemic of cholera and was carried out by Jaime Ferran.
• Jaime Ferrán y Clúa was a Spanish-French bacteriologist and sanitarian, contemporary of Robert Koch, and said by his fellows to have made some of the discoveries attributed to Koch.

Additional Information

• Jonas Salk:
  • Jonas Salk first invented the vaccine against poliomyelitis.
  • He used the dead polioviruses as a vaccine and their entry into any organism lead to the formation of useful antibodies.
  • These antibodies are effective for all counter-attacks against viral attacks.
• ​Edward Jenner:
  • Edward Jenner is considered the founder of vaccinology in 1796, after he inoculated a 13-year-old boy with vaccinia virus (cowpox), and demonstrated immunity to smallpox.
  • He was the first who introduced the concept of immunization to the medical world.

The correct option is 4.

CONCEPT:

• Fuse: A fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit.
• Properties of fuse:
  • High resistance: The resistance of the fuse must have high so that it can carry a short circuit current when a fault occurs.
  • Low melting point: The meting point of fuse wire should be low so that it can melt immediately when excess current flows through it.
  • It is used in a series of equipment as a safety device.
  • The material used for making a fuse wire is an alloy of lead and tin.

​Working of fuse:

EXPLANATION:

• The resistance of the fuse must be high so that it can carry a short circuit current when a fault occurs.
• Resistance is directly proportional to the length of the wire. If resistance is high then the length is also large.
• Resistance of thin wire is more than that of a thick wire of the same length because resistance is inversely proportional to the area of cross-section and the thin wire has less area of cross-section, therefore, higher resistance.
• Hence, for a normal application, an electrical fuse wire needs a large length, thin wire, and low melting point.

Concept:

Self-Induction

• Whenever the electric current passing through a coil changes, the magnetic flux linked with it will also change.
• As a result of this, in accordance with Faraday’s laws of electromagnetic induction, an emf is induced in the coil which opposes the change that causes it.
• This phenomenon is called ‘self-induction’ and the emf induced is called back emf, current so produced in the coil is called induced current.

Induced e.m.f can be given as:

​ -----(1)

Where VL = induced voltage in volts, L = self-inductance of the coil,  rate of change of current in ampere/second.

Calculation:

Given:

I1 = +2 Amp, I2 = -2 Amp, dt = 0.05 sec, VL = 8 volt

⇒ dI = I2 - I1 = (-2 - 2) = -4 Amp

From equation 1,

Concept:

• The power P of a lens is defined as P=1f
• Where f is the focal length of the lens.
• The SI unit of power of a lens is m^-1 and known as Diopter.
• The focal length of a converging lens is positive and that of a diverging lens is negative. Thus, the power of a converging lens is positive and that of a diverging lens is negative.
• The power of the combination of two lenses is P = P₁ + P₂

Calculation:

Given data,

Since both, the lens is the convex lens and the convex lens is the converging lens. So, the focal length and the power of the lens is positive.

Focal length of 1st lens, f₁ = 50 cm = 0.5 m,

Focal length of 2nd lens, f₂ = 25 cm = 0.25 m

Now, power of first lens, P₁ =  = 2 diopter -- (1)

Power of second lens, P2 =  = 4 diopter -- (2)

So, the Net power of these two combinations of lenses is P = P1 + P2

From equation 1 and 2,

⇒ P = 2 + 4 = 6 diopter.

Concept:

• A comb moving through dry hair gets electrically charged through induction.
• Induction charging is a charging method that charges an object without actually touching the object to any other charged object.
• The charging by induction process is where the charged particle is held near an uncharged conductive material that is grounded on a neutrally charged material.
• 
• 
• 

Explanation:

• When a comb is moved through dry air, charge transfer takes place between the comb and hair and so the comb becomes electrically charged.
• Electric field lines of force always originate at the positive charge and terminate at the negative charge.
• So, they do not form a closed loop.
• Whereas the magnetic field lines of force always form a closed loop.

Hence, both statements are correct.

Concept:

Orthocenter:

• The orthocenter is the intersection point of all three altitudes of a triangle.
• The term "ortho" means "right." Hence, the orthocenter indicates the center of all the right angles from the vertices to the opposite sides i.e., the altitudes.

Calculation:

We have lines x = 0, y = 0 and x + y = 9

Clearly, x =0 is the equation of the y-axis, and y = 0 is the equation of the x-axis.

We know that both the x & y axis are interset at the origin (0, 0)& these lines are ⊥ as well.

Therefore, the orthocenter will be at the origin i.e. (0, 0).

Given

The coordinates are:

A (-3, 10) and B (6, -8)

Concept used

Using the section formula, if a point (x, y) divides the line joining the points x₁, y₁ and x₂, y₂ in the ratio m: n, then

(x, y) = (mx₂ + nx₁)/(m + n), (my₂ + ny₁)/(m + n)

Solution

Let the ratio be m: n, then

⇒ (mx2 + nx1)/(m + n) = - 1

⇒ (6m - 3n)/(m + n) = - 1

⇒ (6m - 3n) = - m - n

⇒ 7m = 2n

⇒ m: n = 2: 7

Now,

(my2 + ny1)/(m + n) = y

⇒ (- 8 × 2 + 10 × 7)/(2 + 7) = y

⇒ - 16 + 70 = 9y

⇒ 9y = 54

⇒ y = 6

Hence, The correct option is 4

Calculation:

Given, |0x−ax−b00x−cx+bx+c1|=0

Expanding along column 1,

0 + 0 + (x + b)[(x - a)(x - c) - 0(x - b)] = 0

⇒ (x + b)(x - a)(x - c) = 0

So, the roots of the equation are -b, a, c.

⇒ The sum of the roots = a - b + c

∴ The correct option is (2).

Concept:

A unit vector that makes an angle α with the positive direction of the x-axis and an angle β with the positive direction of the y-axis is given by cos(α)î + cos(β)ĵ

Explanation:

Given:

The given unit vector makes an angle of 30° with the positive direction of the x-axis.

Angle with the positive direction of x-axis = 30°

⇒ Angle with the positive direction of the y-axis = 60°

∴ The required unit vector is cos(30°)î + cos(60°)ĵ

Explanation:

Concept:

• The greatest integer function of a number rounds off the number to the integer less than the number
• Every integer x can be witten as x = [x] + {x}, where [x] is the integer part of x and {x} is the fractional part of x
• 0 ≤ {x} < 1
• If x is an integer, then {x} = 0

Property of greatest integer function:

• [-x] = -[x] , if x ∈ Z
• [-x] = -[x] - 1, if x ∉ Z

Calculation:

Given, z = [y] and y = [x] − x, where [.] is the greatest integer function

If x is not an integer but positive,

⇒ x > 0 and x ∉ Z

⇒ y = [x] − x = [x] − ([x] + {x})

⇒ y = -{x}

Now given z = [y]

Putting the value of y,

⇒ z =[-{x}]

⇒ z = -[{x}] - 1 ({x} ∉ Z)

⇒ z = -0 - 1 (∵ 0 ≤ {x} < 1))

⇒ z = -1

∴ The correct option is (1).

Concept:

For a homogeneous system -

• If D ≠ 0, then only trivial solution x = y = z =0.
• If D = 0, then infinite solutions are there.

Where D is the determinant of matrices formed by the coefficient of x, y, and z out of the given three equations and D1 is calculated by replacing the first column with constant terms of the given equation.

Calculation:

Given:

The system of equations px - 2y - pz = 0, 2x + py -pz = 0, -px + py + 2z = 0 has a non-trivial solution.

If there is a non-trivial solution, ∴ D must be zero.

⇒ D = 0

⇒  = 0

⇒ p(p × 2 - (-p) × p) - (-2)(2 × 2 - (-p) × (-p)) + (-p)(2 × p - (-p) × p) = 0

⇒ -2p² + 8 = 0

⇒ p² = 4

⇒ p = ± 2

∴ sum of possible values = 2 + (-2) =0

The logic follows here is :

• The pentagon is rotated clockwise 90 degrees and the figure is cut in the opposite sense as in figure R.

Similarly,

• The two parallel lines are rotated anti-clockwise 90 degrees without orientation and the dot is taken out of the figure and replaced with a circle.

Therefore, the figure with all those arrangements can be seen in ‘figure C.’

Hence, the correct answer is “Option (3).”

The correct answer is Prithvi.​

Key Points

• The Prithvi was India's first indigenously developed ballistic missile produced by the Integrated Guided Missile Development Program(IGMDP)
• It is a road-mobile, short-range ballistic missile (SRBM) powered by a single-stage, two engines, and liquid- fuel.
• Development of Prithvi began in 1983, and it was first tested on February 25, 1988
• Till now, three versions of Prithvi are- Prithvi-I, Prithvi-II, Prithvi-III.​

Additional Information

The Correct Answer is Diamond city
Key Points:

• Surat is famous for its diamond cutting and polishing and is known as the Diamond City of India.
• 90% of all diamond cutting and polishing on the planet takes place in Surat.

Important Points:

• Surat is a port city situated on the banks of the Tapi River.

Additional Information:

Option 3 is correct, i.e Article 21 A.

Key Points

• There are six Fundamental Rights in the Indian Constitution and they are as follows:
  • Right to equality
  • Right to freedom
  • Right against exploitation
  • Right to freedom of religion
  • Cultural and educational right
  • Right to constitutional remedies
• Article 21A is added in the Indian Constitution in the 86th Constitutional Amendment Act 2002.

• Article 19 to 22 comes under the Right to freedom of the Fundamental Right of the Indian Constitution.

The correct answer is the Jallianwala Bagh massacre.

Key Points

• The letter was written by Rabindranath Tagore to Lord Chelmsford, the British viceroy, repudiating his Knighthood in protest of the Jalianwalla Bagh mass killing.
• Rabindranath Tagore was a Bengali polymath who worked as a poet, writer, playwright, composer, philosopher, social reformer, and painter.
  • He reshaped Bengali literature and music as well as Indian art with Contextual Modernism in the late 19th and early 20th centuries.

Additional Information

• The Jallianwala Bagh massacre, also known as the Amritsar massacre, took place on 13 April 1919.
  • A large peaceful crowd had gathered at the Jallianwala Bagh in Amritsar, Punjab to protest against the arrest of pro-Indian independence leaders Dr. Saifuddin Kitchlew and Dr. Satya Pal.
  • In response to the public gathering, the Anglo-Indian Brigadier R. E. H. Dyer surrounded the protesters with his Gurkha British Indian army unit, Sindh Sikh regiment, and 52nd Sikh regiment.
• The Chauri Chaura incident took place on 4 February 1922 at Chauri Chaura in the Gorakhpur district of the United Provinces in British India, when a large group of protesters participating in the non-cooperation movement, were fired upon by the police.

The correct answer is Mauryan dynasty.
Key Points

• Chandragupta Maurya was an Indian emperor who founded the Maurya Empire.
• Chandragupta Maurya was born in Patna in the modern-day Bihar state of India.
• Chandragupta, with the help of an intelligent and politically astute Brahmin, Kautilya usurped the throne by defeating Dhana Nanda in 321 BC.
• Chandragupta Maurya, known as Sandrakottos to the Greeks, was the founder of the Maurya Dynasty.​

Additional Information

• Vardhana Dynasty:
  • King Harshavardhana was also known as Harsha.
  • He was the son of Prabhakar Vardhana, the founder of the Pushyabhuti Dynasty or the Vardhana Dynasty.
  • After the downfall of the Gupta Empire in North India, the most prominent and strong Dynasty was the Pushyabhuti Dynasty.
• Gupta Dynasty:
  • In Ancient India, the Gupta Dynasty ruled from the mid-to-late 3rd century to 543 AD.
  • Gupta Dynasty was founded by Sri Gupta.
  • The Gupta dynasty is believed to have started as a wealthy family from either Magadha or Prayaga (now eastern Uttar Pradesh).

The logic follows here is :-

From the given words we can understand that it is the process of a newspaper.

Information → Verifying → Editing → Printing → Publishing

So, logical and meaningful order is 2 - 4 - 5 - 3 - 1.

Thus, the correct answer is "2 - 4 - 5 - 3 - 1".

The correct answer is Pune.

Key Points