Indian Navy SSR Mock Test - 3 - Airforce X Y / Indian Navy SSR MCQ

The correct answer is 'Non-finite Verb'.

Key Points

• Here, in the given sentence the underlined part 'to wake' is a 'Non-finite Verb'.
• Non-finite Verb: Non-finite verb forms do not show tense, person or number. Typically they are infinitive forms with and without to (e.g. to go, go), -ing forms, and -ed forms (e.g. going, gone).
  • Example: You need to paint the whole cupboard, starting from the bottom.
• Therefore, as per the points mentioned above, we find that the correct answer is Option 1.
  ​

Correct Answer: Non-finite Verb.

Additional Information

• Let's look at the definition of the other words given in the option:
• Finite Verb: Finite verb forms show tense, person, and number (I go, she goes, we went, etc.)
  • Example: Does your brother know my brother?
• Modal Verb:
  • Core modal verbs: can, could, may, might, will, shall, would, should, must.
  • Semi-modals: dare, need, ought to, used to.
  • Other verbs with modal meanings: have (got) to, be going to, and be able to.
• Linking Verb: a verb such as (be) or (become) that connects a subject with the adjective or noun that describes it.

The correct answer is 'looked'.

Key Points

• The option 'looked' is the correct answer because the given statement is in the past tenses and the entire statement must be in the same tense.
• The option 'look' is incorrect because 'look' is in the present tense.
• The option 'looks' is in the present tense.
• The option 'was looked' is incorrect because the given sentence is in the active voice and 'was looked' cannot be used in an active voice sentence.
• Hence, the correct form of tenses, 'looked' should be used to make the sentence grammatically correct.
• Hence, the correct answer is 'looked'.

​Correct sentence: She came to the writing-table and looked through the letters which were waiting for her.
Additional Information

• An action verb expresses an activity that a person or thing can do.
  • Example: Rohan eats cake. (Eating is something Rohan can do.)
    The bear chased the salmon in the shallow rapids. (Chasing is something the bear can do.)
• A stative verb expresses a state rather than an action. A stative verb typically relates to a state of being, a thought, or an emotion.
  • Example: She believes in fairies.
    He feels elated.
• ​A transitive verb is one that acts on something (i.e., it has a direct object).
  • Example: The postman will give Sarah the letter. (Here, the direct object is the letter.)

The correct answer is 'pacified.'

Key Points

• The meaning of the word 'placated' is to make (someone) less angry or hostile.
  • Word 'placated' का अर्थ (किसी को) कम क्रोधित या शत्रु बनाना है।
• Let us discuss the meanings of the given options:
  • Pacified: quell the anger, agitation, or excitement of. (क्रोध, आंदोलन, या उत्तेजना को शांत करना)
  • Stopped: to finish moving or make something finish moving. (रुकना या (किसी को) रोकना (गतिमान न रहना या न रहने देना))
  • Started: to begin doing something. (कुछ करना आरंभ करना)
  • Rushed: to move or do something with great speed, often too fast. (प्रायः बहुत तेज़ी से चलना, गति करना या कोई काम करना​)
• Therefore, the word which is synonymous with the underlined word is 'pacified.'

Additional Information

• Let us the synonyms of the given words​:
  

The correct answer is 'punishes'.

Key Points

• The passage is a non-fiction piece on the theme of 'freedom'. The purpose of this passage is to explain, analyse, define or clarify something—to provide us with information and to show the how and why of things.
• Read the lines of the passage- "If the laws are reasonable and are impartially administered, you have no reason to complain, because they increase your freedom by protecting you against assault, highway robbery and disorder generally."
• After reading the above lines from the passage we can conclude that if a person does not follow the law and order he/she will suffer in future in the form of assault, highway robbery and disorder. Hence, The author does not favour the non-violent means to get our demands conceded, because the person doing so is the ultimate sufferer.

Therefore, the correct answer is Option 1.

The correct answer is 'That everybody is absolutely free in modern democracy. ​'.

Key Points

• The passage is a non-fiction piece on the theme of 'freedom'. The purpose of this passage is to explain, analyse, define or clarify something—to provide us with information and to show the how and why of things.
• Read the lines of the passage- " If you live in a civilised country, your freedom is restricted by the laws of the land enforced by the police, who oblige you to do this, and not to do that and to pay rates and taxes. If you do not obey these laws, the courts will imprison you and if you go too far, kill you. If the laws are reasonable and are impartially administered, you have no reason to complain, because they increase your freedom by protecting you against assault, highway robbery and disorder generally."
• After reading the above lines from the passage we can conclude that the popular misconception about freedom is that everybody is absolutely free in a modern democracy.

Therefore, the correct answer is Option 1.

The correct answer is "Catastrophe".

Key Points

• According to the meaning of the given sentence, an occurrence that results in immediate harm or suffering
• A catastrophe is an unanticipated occurrence that results in significant pain or harm.
  • Example: The news of the catastrophe in our own neighborhood devastated us.
• So, we can replace the word "catastrophe" instead of the given sentence.

Additional Information

• Let's discuss the other options.
• When a person or thing is personified, they are addressed as if they were present by using an apostrophe.
• Philanthropy is generally characterized as the love of humanity.
• Philosophy is the application of reason to comprehend the nature of reality and existence, the application and boundaries of knowledge, and the fundamentals of moral judgment.

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 Stellar distances.

Key Points

• A light-year, alternatively spelled lightyear, is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46×1012 km), or 5.88 trillion miles (5.88×1012 mi)
  • As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year (365.25 days).
  • Because it includes the time-measurement word "year", the term light-year is sometimes misinterpreted as a unit of time.
  • Hence, Light year is a measurement of Stellar distances.

Additional Information

• SI base units:

Concept:

The thermodynamic process depends upon factors like temperature (T), Pressure (P), Volume (V) and heat exchanged by the system (). Depending on the change in these physical properties, the Thermodynamic processes are divided into different types. These types have some relations governing them.
Types of thermodynamic processes:

1. Cyclic Process
If a system is said to be reversible, i.e., For a process if the system returns back to its initial state after doing some work then the process is said to be a cyclic process.
For the cyclic process
Now according to the First Law of Thermodynamics ΔQ=ΔW+ΔU, so if .

2. Isobaric Process:

If the pressure remains constant for a system, then the process is called an isobaric process.
So if pressure is constant the net work done by the system can be given as

This means that the heat supplied to the system is used up partially in changing its volume and partially in changing the temperature.
3. Isochoric Process
If the volume remains constant for a system, then the process is known as an Isochoric process.

For this process according to the first law of thermodynamics , so if volume remains constant this means

Hence,

Hence in this process, the Heat supplied will be used to increase its internal energy

4. Isothermal Process

If the temperature remains constant for a system, then the process is known as an Isothermal process.
According to Boyle's law for a fixed mass of gas at a constant temperature, the volume is inversely proportional to the pressure. This can express this mathematically as:

PV = Constant
As the isothermal process has a constant temperature, they are governed by Boyle's law since temperature remains constant the internal energy of the system will also be constant, i.e., .

5. Adiabatic Process
An adiabatic process is a thermodynamic process in which there is no exchange of heat between the system and surrounding, that is, the heat remains constant,
i.e. ΔQ=0

For an adiabatic process,

PVγ= Constant

where  is ratio of specific heat at constant pressure to that of at constant volume.

∴ (a) → (ii), (b) → (iii), (c) → (iv), (d) → (i)

Concept

• The substances obtained from minerals are known as inorganic substances.
• They are generally obtained from non-living matter.
• They are less complex in nature.
• Usually do not contain carbon.
• Do not contain carbon-hydrogen bonds.
• Examples are calcium, potassium, magnesium etc.

Explanation

Protein:

• Proteins are very large molecules.
• They are composed of basic units called amino acids.
• Proteins contain carbon, hydrogen, oxygen, nitrogen, and sulfur.
• Protein molecules are large, complex molecules.
• They are organic materials found in living matter.
• They are involved in the most basic and important aspects of life.
• These include metabolism, movement, defence, cellular communication, and molecular recognition.

Thus, protein is not an inorganic substance.

Concept:

Uranium:

• Uranium is a radioactive element commonly used as fuel in nuclear reactors. It can undergo nuclear fission, releasing a large amount of energy.
• The rate of the fission reaction can be controlled by adjusting the concentration of Uranium-235, a fissile isotope of uranium, in the fuel rods.
• It is used for fission reactions.

Moderator:

• In a nuclear reactor, the fission reaction produces fast-moving neutrons that need to be slowed down in order to interact with the fuel and sustain the reaction.
• The moderator is a material, usually water or graphite, that is used to slow down the neutrons to a speed at which they can interact with the fuel and produce more neutrons.
• It Slows down the fast-moving neutrons

Control rod:

• Control rods are devices made of neutron-absorbing materials such as boron or cadmium that can be inserted or removed from the reactor core to control the rate of the fission reaction.
• By absorbing neutrons, the control rods reduce the number of neutrons available to interact with the fuel, slowing down or stopping the reaction.
• The reaction rate can be controlled by it.

Coolant:

• The coolant is a fluid, typically water or gas, that circulates through the reactor core to transfer heat from the fuel rods to a steam turbine.
• The heat generated by the fission reaction is used to produce steam, which drives the turbine and generates electricity.
• The coolant also helps to regulate the temperature of the core and prevent it from overheating.
• It transfers heat from the core to turbine.

​So, the answer would be (A) - (III), (B) - (II), (C) - (I), (D) - (IV)

The correct answer is option (3).

Concept:

The efficiency of Carnot or any reversible engine is given by:|

where, η = Efficiency of Carnot Engine, T1 = Source temperature in K, and T2 = Sink Temperature in K.

Calculation:

Given:


Putting values from eq(i) in eq(ii),

The correct answer is:

c) Animals reproduce only by sexual mode of reproduction

Explanation:

• While many animals reproduce sexually, some animals can reproduce asexually. Examples include hydra (budding), planaria (regeneration), and some insects and reptiles (parthenogenesis).
• Therefore, it is incorrect to say that animals reproduce only by sexual reproduction.

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:

• For any base b which is a transcendental number the logarithm log_bn of every integer n ≥ 2 is an irrational number.
• A rational number is a number, which can be written as p/q where p & q are integers and q ≠ 0.

Formula used:

• log mn = log m + log n
• log_aa = 1
• log_aⁿb = (1/n) log_ab

Calculation:

Statement:1 log₁₀50 is a rational number.

log1050 = log1050 = log10(5 × 10)

log1050 = log105 + log1010

log1050 = log105 + 1

As discussed, log105 is an irrational number, log1050 will be also irrational.

Statement:2 log100 10 is an irrational number.

log₁₀₀10 = log_10²10 = (1/2)log₁₀10 = 1/2

Which is a rational number.

∴ Both statements are incorrect.

Calculation:

Given: z =

=

=

=

=

=

= -1 + i

So Real part = -1

∴ The correct option is (1)

Concept:

• The domain of a function is the set of values that we are allowed to plug into our function.
• The range is the set of all possible values that the function will give when we give in the domain as input.

Calculation:

The above graph is of the function cosecx

Since , the domain of the cosec function is the set {x : x ∈ R and x ≠ nπ, n ∈ Z} or R - {x : x = nπ, n ∈ Z} and

the range set is the set {y : y ∈ R and y ≥ 1 or y ≤ -1}

i.e., the set R - (-1,1).

It means that y = cosec x assumes all real values except -1 < y < 1 and is not defined for the integral multiple of π.

Hence, the correct answer is option 2).

Calculation:

Formula:

The Eccentricity of the ellipse 

Calculation:

Given equation of the ellipse are:

Eccentricity of the ellipse is given by

As eccentricities of equation 1 and 2 are equal,

Concept:

If a1, a2, a3,...are in GP with common ratio r, then 1/a1, 1/a2, 1/a3,.......are also in GP with common ratio 1/r.

If a, ar, ar2, ar3,.....,arn-1 are in GP then nth term of GP is given by Tn = arn-1

If a1, a2, a3, a4 are in GP, then common ratio of GP is given by,

If a be the first term, r be the common ratio of a GP then,

Let S∞ denote the sum of infinite term of GP, then , where -1 < r < 1.

Calculation:

Given GP is 2, 4, 8, 16.....

⇒ a = 2, r = 2 > 1

Let, n terms needed to get the sum 254.

We know that

⇒ 2ⁿ - 1 = 127

⇒ 2ⁿ = 2⁷

⇒ n = 7

Concept:

1) For three vectors to be coplanar, their scalar triple product should be zero.

2) Scalar triple product of vectors  and  is denoted by .

Calculation:

Given vectors are λî + ĵ + 2k̂, î + λĵ − k̂ and 2î − ĵ + λk̂

For the three vectors to be coplanar, their scalar triple product is zero.

⇒  = 0

⇒ λ(λ² - 1) - (λ + 2) + 2(- 1 - 2λ) = 0

⇒ λ³ - 6λ - 4 = 0

⇒ (λ + 2)(λ² - 2λ - 2) = 0

Therefore, the vectors are coplanar for λ = - 2.

The correct answer is option 1.

Concept:

Order of the differential equation: The order of the highest derivative present in the differential equation is the order of the differential equation.

Degree of the differential equation: The power of the highest derivative present in the differential equation is the degree of the differential equation.

Degree, n = 1

m + n = 2 + 1 = 3

The value of m + n is 3.

Therefore, the correct answer is 3.

Given:

sin (C + D) = √3/2

sec (C - D) = 2/√3

Calculations:

If sin (C + D) = √3/2 and sec (C - D) = 2/√3

Then,

⇒ C + D = 60°.............(1)

⇒ C - D = 30°..............(2)

Solving 1 & 2 .

C = 45°

D = 15°

∴ Option 1 is the correct answer.

Concept:

The value of the determinant  can be obtained by expanding along any row or column.

Expanding along the third column, the value of the determinant is

c(dh - eg) - f(ah - bg) + i(ae - bd)

Calculation:

Given,

Expanding LHS along column 3,

⇒ 0(x2 + 2x + 2- 2) - 0(1 - 2) + 1(1 - (x2 + 2x + 2)) = 0

⇒ 0 + 0 - x² - 2x - 1 = 0

⇒ x2 + 2x + 1 = 0

⇒ (x + 1)² = 0

∴ x = -1

Explanation:

Given function,

Domain = (-∞, ∞) \{-3}

Let , where y is in the range of h(x).

⇒ (x + 3)y = x - 2

⇒ xy - x + 3y + 2 = 0

⇒ x(y - 1) = -(3y + 2)

y can take any real value but y ≠ 1

So, the range of h(x) is (-∞, 1) ∪ (1, ∞)

The correct answer is Jeremy Lalrinnunga.In News

• Jeremy Lalrinnunga wins silver medal at Jinju, Korea in May 2023.

Key Points

• In the Asian Weightlifting Championships, India’s weightlifter Jeremy Lalrinnunga won a silver medal on 8 May 2023 at Jinju, Korea.
• He won medal in the snatch event with a lift of 141 kg in the 67 kg weight class.
• Competing in his first tournament since winning the gold at the 2022 Commonwealth Games, Jeremy was the only one in the 12-lifter field who did not finish his event.
• China’s He Yueji finished with the gold.

Additional Information

• Achinta Sheuli and Sathish Sivalingam are associated with Weightlifting.
• Terminologies associated with weightlifting are Bomb-out, Clean and jerk, Hooking and Snatch.

The correct answer is AGNIPATH.

Key Points

• The Centre has cleared the AGNIPATH Scheme for recruitment of youth in the armed forces.
• The youth selected under this scheme will be known as Agniveers.
• They will be getting an attractive monthly package with risk and hardship allowances as applicable in the three services.
• They will be also paid a one-time Seva Nidhi Package upon completion of engagement period of four years.

Important Points

• ​‘Agniveers’will form a distinct rank in the three services, and will also wear a distinct insignia as part of their uniform.
• The ‘Agnipath’ model envisages the recruitment of personnel below officer rank (PBOR) in the army, air force and navy for four years, including six months of training.
• The soldiers recruited under ‘Agnipath’ will be released from service after four years, though the new system will have a provision for retaining around 25% of them after another round of screening.

The logic followed here is:

The first word of each pair is the city that has a dam, and the second word of the pair is the state that it is located in.

Sambalpur: Odisha

Sambhalpur is the city that has the Hirakud Dam.
Hirakud Dam is located in Odisha.

Similarly:

Kevadiya : ?

Kevadiya is the city that has the Sardar Sarovar Dam.
Sardar Sarovar Dam is located in Gujarat.

The correct answer is Africa.

Key Points

• The Olympic flag has a white background, with five interlocked rings in the center.
• The five interlocking rings, colored blue, yellow, black, green, and red.
• The five rings represent the five continents of the world: Europe, Asia, Africa, The Americas, and Oceania
• The symbol was originally designed in 1913 by de Coubertin (Released in 1914).

The correct answer is ​Chief Commander of the Legion of Merit.

In News

• PM Narendra Modi conferred with France's highest award in July 2023.

Key Points

• Prime Minister Narendra Modi was awarded the Grand Cross of the Legion of Honour, the highest honour of France, by French President Emmanuel Macron.
• The award ceremony took place at the Elysee Palace.
  • PM Modi thanked President Macron for the honour on behalf of the people of India.
• PM Modi also announced the opening of a new Indian consulate in Marseille in France and said that Indian students doing masters in the European country will now get five-year-long post-study work visas.

Additional Information

• Awards given to PM Narendra Modi in 2023:
  • Fiji: Companion of the Order of Fiji (22 May 2023)
  • Papua New Guinea: Companion of the Order of Logohu (22 May 2023)
  • Egypt: Order of the Nile to Legion of Merit (25 June 2023)

Important Points

• PM Narendra Modi was awarded the Chief Commander of the Legion of Merit from US Government in 21 December 2020.