RRB Junior Stenographer Mock Test - 7 - RRB NTPC/ASM/CA/TA MCQ

Solar energy - Greenhouse effect - Incorrect

• The term ‘Greenhouse effect’ has been derived from a phenomenon that occurs in a greenhouse.
• A greenhouse looks like a small glasshouse and is used for growing plants, especially during winter.
• In a greenhouse, the glass panel lets the light in but does not allow heat to escape.
• Therefore, the greenhouse warms up, very much like inside a car that has been parked in the sun for a few hours. 
• The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth’s surface and atmosphere.
• Solar energy is trapped by the earth atmosphere and radiates slowly so as to cover our earth with a warm blanket.
• This is the natural process of the greenhouse effect on earth to maintain its temperature and makes the earth perfect for life.
• Without the greenhouse effect, the average temperature at the surface of Earth would have been a chilly –18°C rather than the present average of 15°C.
• Carbon dioxide, methane and water vapour are the major greenhouse gases that absorb the infrared radiation from the Earth and re-emit it.
• It is not caused due to solar energy but due to greenhouse gasses.

Thus, the solar energy-greenhouse effect is not the correct pair.

Additional Information

Fossil fuel-burning - Release of CO₂ - Correct

• Carbon dioxide (CO₂) is released into the atmosphere by respiration, the burning of fossil fuels for energy.
• In recent years, their quantities have increased significantly due to the burning of fossil fuels.
• The increased amount of CO₂ in the air is mainly responsible for global warming.

Nuclear power - Radioactive wastes - Correct

• Initially, nuclear energy was hailed as a non-polluting way of generating electricity.
• Later on, it was realised that the use of nuclear energy has very serious inherent problems i.e. the generation of radioactive waste.
• Safe disposal of radioactive wastes is important in nuclear power energy factories.
• Improper disposal of nuclear waste can cause serious physical and biological deformities in living organisms when directly exposed to them. 

Biomass burning - Release of CO₂  - Correct

• Biomass burning means the burning of living or dead vegetation.
• It happens during land cleaning in the agriculture process when crops are out of the field.
• In this process, a high amount of CO₂ is released into the environment.

The United Front government was indeed supported by the Congress party from the outside. The Fodder Scam in Bihar involved Lalu Prasad Yadav, leading to his resignation from his party and the formation of the Rashtriya Janata Dal.

(64)^-3/2 = ( 8 )^{2 x - 3/2} =  (8)^-3  

= 1 / (8)³ = 1/ 512 

So option B is correct answer . 

When the soil has pH value greater than 11, it is termed as practically infertile.

Causes of high soil pH:

• Sources of alkalinity.
• Role of cations (Na and Ca)
• Influence of soluble salt levels
• Influence of carbon dioxide and carbonates.

Important Points 

1. If the pH in the case of saline soil is around 8.5, very good structure
2. And in the case of saline-sodic soil, it is from 8.5 to 10, good structure.
3. And in the case of sodic soil, it is generally greater than 10, structureless.

Note:

Why high pH soils are infertile:

The high pH caused due to the presence of sodium carbonate which is highly soluble.

This high pH causes fulvic and humic acid of organic matter to get dissolve and when the water evaporates, it gives the surface a black color.

This sodic soil creates physical disintegration and due to high sodium and low salt concentration, slaking, swelling and dispersion occurs which caused coagulation of soil particles as Vander Vaal forces dominate due to deficiency of hydrated ions. 

Complete dispersion causes soil crusting and as a result of this germination problem due to clogs that restrict soil and air movement and makes soil infertile.

Let AB be the tower and let C and D be the two's positions men.
At that point ∠ACB = 30°,∠ADB = 45°and AB = 50 m
AC/AB = Cot30° = √3 => AC/50 = √3
=> AC = 50√3m
AD/AB = cot 45° = 1 => AD/50 = 1
=> AD = 50M.
Separation between the two men = CD = (AC + AD)
= (50√3 + 50) m = 50(√3 + 1)
=50(1.73 + 1)m = (50 * 2.73)m = 136.5m.

The assertion is incorrect because the Government of India Act, 1919, introduced responsible government only at the provincial level, not at the central level. The reason is correct in stating that the act introduced Dyarchy as a step towards more self-governing institutions in India, but it did not establish responsible government at the central level.

• Waste produced in the health care sector can prove highly hazardous, more so in the pandemic era.
• Biomedical waste is any waste containing infectious or potentially infectious materials.
• These wastes are generated during the diagnosis, treatment, and immunization of humans and animals.
• Biomedical wastes can be in both solid and liquid forms. Examples of biomedical wastes include:
• Waste sharps such as needles, lancets, syringes, scalpels, and broken glass
• Human tissues or identifiable body parts (as a result of amputation)
• Animal tissues and waste from veterinary hospitals, Used bandages, dressings, gloves, and other medical supplies
• Liquid waste from infected areas, Laboratory wastes

Biomedical wastes are distinct from regular garbage and require particular disposal and treatment.

Important Points 

The World Health Organization (WHO) has categorized biomedical waste into eight categories. They are:

• Infectious Waste – Any biomedical waste that is infectious or contaminated.
• Sharps – Sharps objects like needles, scalpels, broken glass, and razors.
• Pathological Waste – Body parts of humans or animals, including tissues, fluids, or blood.
• Pharmaceutical Waste – Unused drugs, medicine, or creams that are expiring.
• Genotoxic Waste – Toxic drugs and hazardous toxic waste
• Radioactive Waste – Any waste containing potentially radioactive materials
• Chemical Waste – Liquid waste from machines, batteries, and disinfectants is chemical.
• General/Other Waste – All other non-hazardous waste.

Additional Information

Color-coded bins to dispose of biomedical wastes:

Yellow Bin: For anatomical waste, chemical waste, soiled waste, chemotherapy waste, discarded linen and medicines, and laboratory waste.
Red Bin: For contaminated solid waste like infected dressings, and pop casts.
Blue Bin(Infected plastic): Syringes, gloves & cut glasses
Black Bin: For hazardous and other waste

White Bin: (Sharps) Needles & cut glasses

There are 10 prime numbers between 0 and 30 which are: 2,3,5,7,11,13,17,19,23,29. Number one is not a prime number.
Now, for 1, the number of positive divisors or factors is only one i.e. 1 itself.  

Since all side is cube is same 
so the volume of cube is = side of cube * side of Cube * side of cube
lets take side of cube = l 
=> l*l*l
=> l³ 
Hence the correct option is A

• The partition that was officially announced was that the Bengal province was too large to be administered by a single governor and so it would be partitioned on administrative purpose.

•  

  The real reason behind the partition was political and not administrative. East Bengal was dominated by the Muslims and West Bengal by the Hindus. Partition was yet another part of the divide and rule policy.

Statement 1: The Bhopal Gas Tragedy led to a settlement of $470 million between Union Carbide and the Indian government.

This statement is true. In 1989, Union Carbide, the company responsible for the Bhopal Gas Tragedy, reached a settlement with the Indian government for $470 million as compensation for the victims and environmental damage.
 

Statement 2: The tragedy was caused by a leak of methyl isocyanate (MIC) gas.

This statement is also true. The Bhopal Gas Tragedy occurred in December 1984 when a chemical plant owned by Union Carbide leaked methyl isocyanate (MIC) gas, resulting in the exposure of thousands of people to the toxic gas.
Both statements provide accurate information related to the Bhopal Gas Tragedy. Therefore, the correct answer is A) Both statements are true.

We can say that ,
The above given sentence is given in Passive Voice :-
Use structure “subject (Someone )+ auxiliary + present participle + object”
Someone will deliver the packet to your house.
Hence , option B will be correct answer .

The statement implies that inflation rates have attained levels that has been never seen before. The sentence is in present perfect tense which is indicated by the use of ‘have’. The blank will take a verb in the past participle form which means 'to attain a certain level'. Among the given options, only the word ‘reached’ fits in the given blank.

This eliminates all other options.

Meanings of the given words:

Heightened: make or become more intense.

Reached: attain or extend to (a specified point, level, or condition).

Standard: a level of quality or attainment.

Hence, the correct option is B.

The word Vanity (Noun) means : too much pride in your own appearance, abilities or achievements; arrogance.
The word Humility (Noun) means: the quality of being humble. 

The correct order will be:
Since the beginning of history → the Eskimos and Red Indians (Q)→ have managed to catch (P)→ a few specimens of this aquatic animal (S)→ by a very difficult method. (R)

The Chairman of our company takes care of the ordinary workers in the company.

The best idiom to replace ordinary workers is rank and file. This term refers to the regular members of an organisation, specifically those who are not in leadership or management roles.

• Rank and file represents the majority of employees.
• This phrase highlights the importance of these workers.
• It is commonly used in discussions about workforce dynamics.

Thus, the Chairman’s consideration for the rank and file shows his commitment to the entire workforce.

'To abstain' is to stay away from some habit or some decision. None of the other options depict the same meaning.
Thus the correct answer is option 3.
Example- The leaders abstained from voting on the particular topic.

The correct word is 'who' which is a pronoun used to introduce a clause giving further information about a person or people previously mentioned.

The given sentence in active voice is: "Ads on TV increase the sale of any commodity."

The correct transformation of this sentence into the passive voice is: "The sale of any commodity is increased by ads on TV."

Therefore, the correct answer is option B: "The sale of any commodity is increased by ads on TV."

As we can say that ,
Compassionate is someone who cares or is concerned about another person, unsympathetic is one who does not care or understand another’s condition or position. Indecisive means someone who cannot take decisions easily, unlawful is something against law, and Untrustworthy is someone who cannot be trusted.
From above it is clear that Unsympathetic is an opposite word of Compassionate . 

Explanation:

• Identifying the context: In the sentence, the bird watcher is observing different habitats like forest, meadow, lake, swamp, or field.



• Article usage: The article "a" is used before forest, meadow, lake, swamp, or field because the sentence is referring to any of these types of habitats in a general sense.



• Correct choice: Option B: "a" is the most appropriate word for Blank No. 32 as it indicates a non-specific habitat where the bird watcher can look for birds.

• Understanding the context: The sentence is talking about how some birds are found all over the world, while others limit themselves to certain areas.


• Analysis of options: Looking at the options, "must" fits the context best as it implies a stronger sense of certainty compared to the other options.


• Reasoning: The sentence is discussing the behavior of birds in certain areas, and using "must" suggests a high likelihood or necessity of finding certain birds in those areas.


• Conclusion: Therefore, the most appropriate word for Blank No. 34 is must.

• Understanding the context: The sentence is talking about birds being found all over the world and some birds restricting themselves to certain areas. It indicates that not all birds are found everywhere.


• Exploring the options:
  
  
  
  • A: All - This option implies that all birds are found everywhere, which contradicts the context of the sentence.
  
  
  • B: Most - While most birds may be found in various habitats, it does not account for the specific habitats mentioned in the sentence.
  
  
  • C: Some - This option correctly reflects the idea that only some birds are found in specific areas, aligning with the context.
  
  
  • D: More - This option does not provide a suitable replacement in the context of the sentence.
  
  
  • E: None of these - This option is not relevant as option C fits the context.
  
  
  
  


• Conclusion: The most appropriate word for Blank No. 35 is "Some" as it accurately represents that only a portion of birds are found in specific areas.

The author makes this clear in the fourth sentence of the passage that a man of knowledge possesses immense influence in society

The author considers that a man of knowledge is reformative in his approach. He can tun the sleeping people into a thundering force.

The word “deify” means to “worship or regard as a god.” For example: “she was deified by the early Romans as a fertility goddess”.

Vacillate means to be indecisive whereas decide means come or bring to a resolution. Therefore, Vacillate is the antonym of decide. 

Infrequent: This term suggests occurrences that happen with less frequency than typical or expected.

Rare: "Rare" conveys a higher degree of scarcity or unusualness compared to "infrequent." Something that is rare happens very seldom, with a low probability of occurrence.

'A drop in the bucket' means that 'a very small amount compared with what is needed or expected'.