NVS Lab Attendant Mock Test - 3 - NVS TGT/PGT MCQ

From the common explanation, we get G sits third to the right of M.

Hence, Option C is correct.

Final Arrangement:

Common Explanation:

References:

J sits fourth to the right of O and N sits second to the left of J.

Only H sits between J and G.

Inferences:

From the above references, we get

References:

Only D sits between G and C

G is not an immediate neighbour of J but fifth to the right of I.

M, who sits exactly in the middle, is second to the right of I.

Five persons sit between L and J.

Inferences:

From the above references, we get

References:

E is not an immediate neighbour of N.

Inferences:

From the above reference, we get the final arrangement:

If you fold the lower part to upper direction from dotted line , it will cover the upper part figure exactly and will make half circle.

1st term = 6
2nd term = 6 + 5 = 11
3rd term = 11 + 10 = 21
4th term = 21 + 15 = 36
5th term = 36 + 20 = 56

Thus, Missing Number is 6th term = 56 + 25 = 81

The given analogy is:

Eye : Myopia

Here, "Myopia" is a condition affecting the eyes.

Now, we need to find a condition that affects the teeth:

Teeth : ?

Let's consider the options:

1. Pyorrhoea - This is a condition that affects the teeth and gums.
2. Cataract - This is a condition that affects the eye.
3. Trachoma - This is a condition that affects the eye.
4. Eczema - This is a condition that affects the skin.

The correct condition affecting the teeth is:

1. Pyorrhoea

The Small Industries Development Bank of India (SIDBI) has announced the launch of a pilot phase of ‘Mission 50K-EV4ECO’
The pilot scheme aims at strengthening the EV ecosystem, including uptake for two, three and four-wheelers through direct and indirect lending.

• World Book and Copyright Day is observed every year on April 23 to promote the habit of reading, writing, publishing and copyright.
• The first World Book Day was observed in 1995. International Decade of Indigenous Languages will be observed from 2022 to 32. The UNESCO theme of the World Book Day 2023 is ‘Indigenous Languages’.

IIM Mumbai collaborated with Starburst to fortify India's Aerospace, New Space, and Defence (ASD) startup ecosystem. This partnership aims to nurture and empower ASD startups across India, fostering innovation within the sector and providing unparalleled support for their growth and contribution to India’s ASD industry.

Aishwary Pratap Singh Tomar won the gold medal in the 50m rifle 3P event at the 2023 Asian Shooting Championship with a final score of 463.5. He defeated China's Tian Jiaming, who won the silver medal with a score of 462.7. Tomar's impressive performance at the Asian Shooting Championship made him the most successful Indian shooter at the event. He is a rising star in the sport of shooting and is expected to challenge for medals at the 2024 Summer Olympics.

The correct answer is Jharkhand.

In News

• President Draupadi Murmu appointed new governors in 13 states. 

Key Points

• President Droupadi Murmu appointed 13 new Governors while accepting the resignations of Bhagat Singh Koshyari as Governor of Maharashtra and of Radha Krishnan Mathur as Lt. Governor of Ladakh on 12 February 2023.
• C.P. Radhakrishnan has been appointed as Governor of Jharkhand in place of Ramesh Bais who was appointed as Governor of Maharashtra.
• GC Kataria was appointed Governor of Assam.

Additional Information

• Appointment of Governors:
  • Article 153 of the Indian Constitution says “There shall be a Governor for each State.”
  • According to Article 155 "the Governor of a State shall be appointed by the President."
  • Under Article 156, "the Governor shall hold office during the pleasure of the President", but his term shall be five years.
  • The Governor must be a citizen of India and must have completed 35 years of age.

Venue: This term typically refers to a specific location where an event or activity takes place. It often carries the connotation of being chosen or designated for a particular purpose, such as a concert venue, a wedding venue, or a courtroom.

Place: "Place" is a more general term that can refer to any location or area, whether specific or undefined.

Explanation:

• When the body is completely immersed in the liquid: This is when the maximum apparent loss in weight of the body will be observed. When the body is completely immersed in the liquid, the weight of the displaced liquid is equal to the weight of the body. This results in the maximum apparent loss in weight.


• When the body just touches the surface of the liquid: At this point, the apparent loss in weight will not be at its maximum as the body has not displaced enough liquid to equal its weight.


• When the body is partially immersed and also touches the sides of the container: This scenario will not result in the maximum apparent loss in weight as the body is not completely submerged in the liquid.


• When the body is partially immersed in the liquid: Similar to when the body touches the sides of the container, this scenario will not result in the maximum apparent loss in weight as the body is not completely submerged in the liquid.

If we consider the situation when force is equivalent to the rate of change of momentum. I.e Force = (change in momentum)(time interval)
 then, change in momentum = Force * (time interval).
Therefore, the unit for momentum can be Newton - second (Ns)

Genetics is the branch of science which deals with the study of:
- Heredity: Genetics focuses on the study of how traits are passed down from one generation to another. It explores the principles of inheritance and the transmission of genetic information through genes.
- Variation: Genetics also examines the variations that occur within a species, including the factors that contribute to genetic diversity. It explores the mechanisms of genetic mutations and how they can lead to variations in traits.
- Genes and Chromosomes: Genetics delves into the structure and function of genes, which are segments of DNA that contain the instructions for building and maintaining an organism. It also studies chromosomes, which are structures within cells that carry genes.
- Genetic Disorders: Genetics investigates the causes and mechanisms of genetic disorders, such as inherited diseases and conditions that can be passed down from parents to their offspring. It aims to understand the underlying genetic factors and develop strategies for diagnosis, treatment, and prevention.
- Genetic Engineering: Genetics explores the field of genetic engineering, which involves manipulating and modifying the genetic material of organisms. It investigates techniques such as gene editing, gene therapy, and genetic modification, with the aim of improving human health, agriculture, and other areas.
- Evolution: Genetics plays a crucial role in the study of evolution, as it helps explain how populations change over time and how new species arise. It provides insights into the mechanisms of natural selection, genetic drift, and other factors that drive evolutionary processes.
Overall, genetics is a broad field that encompasses the study of heredity, variation, genes, chromosomes, genetic disorders, genetic engineering, and evolution. It provides valuable insights into the fundamental principles of life and has significant implications for various fields, including medicine, agriculture, and conservation.

The correct answer is increase in sea levels.

Key Points

• Global Warming:
  • Global warming is the phenomenon of a gradual increase in the temperature near the earth’s surface.
  • This phenomenon has been observed over the past one or two centuries.
  • This change has disturbed the climatic pattern of the earth.
  • However, the concept of global warming is quite controversial but the scientists have provided relevant data in support of the fact that the temperature of the earth is rising constantly.
  • There are several causes of global warming, which have a negative effect on humans, plants, and animals.
  • These causes may be natural or might be the outcome of human activities.

Additional Information

• Effects of Global Warming:
• Rise in Temperature:
  • Global warming has led to an incredible increase in the earth’s temperature.
  • Since 1880, the earth’s temperature has increased by ~1ºC.
  • This has resulted in an increase in the melting of glaciers, which has led to an increase in the sea level.
• Threats to the Ecosystem:
  • Global warming has affected the coral reefs that can lead to a loss of plant and animal lives.
  • An increase in global temperatures has made the fragility of coral reefs even worse.
• Climate Change:
  • Global warming has led to a change in climatic conditions.
  • There are droughts at some places and floods at some.
  • This climatic imbalance is the result of global warming.
• Spread of Diseases:
  • Global warming leads to a change in the patterns of heat and humidity.
  • This has led to the movement of mosquitoes that carry and spread diseases.

NaCl is a neutral salt formed by the reaction between strong acid HCl and strong base NaOH. The reaction occurs as follows.

Hydrological Cycle

• The process of circulation of water within the hydrosphere of Earth in different forms such as liquid, solid and gaseous states are called the Hydrological Cycle of water.
• It starts with the Evaporation of water from the surface of the water bodies and further, it includes Transpiration, Sublimation, Condensation and Precipitation.

Key Points

'Hydrological cycle' steps

• The first step of the water cycle is evaporation from water bodies means the part of the Hydrosphere.
• The second step of the water cycle is condensation, which takes place in the atmosphere.
• The third step of the water cycle is precipitation and runoff means the part of the lithosphere.
• The final step of the water cycle is in the Biosphere. 
• It is the zone where all the spheres interact and work together.
• It includes processes like water uptake and transpiration by plants.

​

Thus, in the 'Hydrological cycle' the order of the source in which they connected from each other is first Hydrosphere, second Atmosphere, third Lithosphere and fourth Biosphere.

Additional Information

Processes during a hydrological cycle:

​​Evaporation

• When waters convert from liquid to gas stage as it moves from the groundwater into the atmosphere, this phenomenon is called Evaporation.
• Mainly Solar radiation is the source of energy for evaporation. 

Transpiration

• When plant uptake of water at the roots, transport of water through plant tissues, and release of vapour by leaves is known as transpiration.

Condensation

• The Process of conversion of water vapour to liquid water droplets in the air is called Condensation.
• It is responsible for the formation of fog and clouds.

​Precipitation

• When the condensed water vapour falling to the surface of the Earth is known as Precipitation.
• It occurs in the form of rain, snow, and hail.
• It provides for the delivery of atmospheric water to the earth in the form of rain.

The Pineal Gland is located towards the center of the brain, dorsal to the diencephalon. This small endocrine gland is known for secreting the hormone melatonin, which plays a crucial role in regulating sleep patterns, reproductive development, and seasonal functions.

The correct answer is Clay.

Key Points

• The particles that makeup soil are categorized into three groups by size – sand, silt, and clay.
  • Single clay particles cannot be seen with a naked eye.
  • Size is less than 0.002 mm in diameter.
  • ​​Sand particles are the largest and clay particles the smallest. 

Additional Information

• The particles in clay are tightly packed together with each other with very little or no airspace.
• This clay has very good water storage qualities and makes it hard for moisture and air to penetrate into it.
  • It is very sticky to the touch when wet, but smooth when dried.
  • It is the densest and heaviest type of soil that does not drain well or provide space for plant roots to flourish.

Light waves are electromagnetic waves:

• Light waves are a type of electromagnetic waves.


• Electromagnetic waves are waves that consist of both electric and magnetic fields oscillating perpendicular to each other and to the direction of wave propagation.


• Light waves are a form of electromagnetic radiation that can be detected by the human eye.


• They have a wide range of wavelengths, which determine the color of light.


• Light waves can travel through a vacuum as well as through various mediums, such as air, water, and glass.


• They can be reflected, refracted, diffracted, and polarized.


• Light waves also exhibit properties of both particles and waves, known as the wave-particle duality.

Therefore, the correct answer is A: Electromagnetic waves.

Concept:

Nuclear reactor:

• It is a device in which a nuclear reaction is initiated, maintained, and controlled.
• It works on the principle of controlled chain reaction and provides energy at a constant rate.

Explanation:

• Nuclear Fuel: It is a fissionable material to be used for the fission process to take place. Therefore option 1 is correct.
• Commonly used fuels in a nuclear reactor are U233, Enriched U235, Pu239 etc. 
• Generally, uranium oxide pellets are inserted end to end into long hollow metal tubes constituting the fuel rods.
• When slow neutrons interact with the fuel, the fission starts, and the energy is released. 

Additional Information

• The moderator's function is to slow down the fast-moving secondary neutrons produced during the fission.
  • The material of the moderator should be light and it should not absorb neutrons.
  • Usually, heavy water, graphite, deuterium, and paraffin, etc. can act as moderators.
• Controller: These are made with neutron-absorbing material such as cadmium, hafnium or boron, and are inserted or withdrawn from the core to control the rate of reaction, or to halt it. 
• Lubricant: Lubricant has shown that it is possible to produce materials capable of lubricating some reactor components.
  • In order to further the development of such lubricants, the U.K.A.E.A. and the nuclear manufacturing groups have co-operated in providing lubricant manufacturers.

Lemon fruit is a rich source of citric acid.

• Citric acid is a weak organic acid.
• It is a six-carbon tricarboxylic acid.
• A manufactured form of citric acid is commonly used as an additive in food, cleaning agents, and nutritional supplements.
• Citric acid is mainly produced by fungal fermentation.
• Chemical synthesis of citric acid is possible, but it is expensive than fungal fermentation.

Biogas comprises primarily methane (CH₄) and carbon dioxide (CO₂) and may have small amounts of hydrogen sulphide (H₂S).

The correct answer is Salinization.

• Salinization is an increase in the total dissolved solids (TDS) as the salt of the aquifer caused by natural or anthropogenic factors.
• Salinization is a global problem.
  • It tends to be concentrated in the world’s arid and semi-arid regions.
• Gypsum (calcium sulfate) or lime can be used to help leach salt from the soil.

Important Points

• Desertification is an environmental degradation that reduces the productivity of dryland ecosystems by reducing plant.
  • Overgrazing is the major cause of desertification worldwide.
  • Other factors that cause desertification are urbanization, climate change, overuse of groundwater, deforestation, natural disasters, and tillage practices in agriculture that make soils more vulnerable to wind.
• Carbonization is a process in which fuel is heated (900–1,200 °C) without air to leave solid porous carbon.
  • By this process, cole creates coke and sub byproducts.
• Oxygenation is a process where the addition of oxygen takes place to any chemical or physical system, including the human body.
  • By the process of oxygenation of the water, fish and seafood farmers can protect their stock against oxygen deficiencies during peak consumption and growth periods.

Additional Information

• The dissolved oxygen content of the water can be expressed as the absolute quantity of oxygen in one unit of water (mg/l, ppm) or as relative oxygen saturation (%).

Binary fission is a kind of asexual reproduction. In binary fission, the fully grown parent cell splits into two halves, producing two pools.

The kinetic theory of matter can be used to explain how solids, liquids and gases are interchangeable as a result of increase or decrease in heat energy. When an object is heated the motion of the particles increases as the particles become more energetic.

Violet and blue colour have shorter wavelength.
So, they scattered more than lights of other colour by the molecules present in the atmosphere.

When source of light is placed verg near to the focus of the reflector which are concave in shape, the reflected light becomes parallel to the principal axis.

In a neutralization reaction between an acid and a base, the products formed are salt and water. This reaction involves the combination of hydrogen ions from the acid and hydroxide ions from the base to form water, along with a salt as a product.

u = 20 m/s, a = -4 m/s², t = 2 s.
v = ?
∵ v = u + at
⇒ v = 20 + (-4) (2)
⇒ v = 20 - 8 = 12 m/s