NVS Lab Attendant Mock Test - 5 - NVS TGT/PGT MCQ

Israel Aerospace Industries (IAI) is the aerospace and defence company that set up AeroSpace Services India (ASI) as its Indian subsidiary. This move signifies IAI's expansion into the Indian market, with ASI being authorized as the sole OEM's Technical Representative for the medium-range surface-to-air Missile (MRSAM) system in India.

The correct answer is salt and water.

• A neutralization reaction is when an acid and a base react to form water and salt and involves the combination of H+ ions and OH- ions to generate water.
  • ​For example, hydrochloric acid reacts with sodium hydroxide to form sodium chloride salt and water. 
    • HCl + NaOH ⟶ NaCl + H_2​O

Important Points

• When a strong acid neutralizes a weak base, the resulting solution's pH will be less than 7.
• When a strong base neutralizes a weak acid, the resulting solution's pH will be greater than 7.

दिए गए मुहावरे का सही अर्थ 'अच्छी-अच्छी बातें कहकर बहकाना' होगा।

• मुहावरा - सब्ज़ बाग़ दिखाना
• अर्थ - अच्छी-अच्छी बातें कहकर बहकाना
• वाक्य प्रयोग - नौकरी दिलाने ‌‌‌का ​सब्ज़ बाग़​ दिखाकर आज-कल लोग फरार हो जाते हैं।

Key Points

• जब कोई वाक्यांश अपने सामान्य अर्थ को छोड़ किसी विशेष अर्थ में रूढ़ हो जाता है उसे ही मुहावरा कहते हैं।

• Lament has two meanings out of which one is 'to complain'.
• Meaning of Complaint: a statement that something is unsatisfactory or unacceptable
• Meaning of Comment: a verbal or written remark expressing an opinion or reaction
• Meaning of Condone: accept (behaviour that is considered morally wrong or offensive)
• Meaning of Console: comfort (someone) at a time of grief or disappointment

As we know that ,
Sublime is magnificent and great, base is anything low, ordinary, concise means short or compact, partial is not complete, and Insist is to make a request.
Therefore , required word is base . 

The given sentence is in Passive voice.
This sentence emphasizes the surprising nature of a small mouse being able to assist a lion. Option D retains the meaning and structure of the original sentence while conveying the same idea that even a small mouse has the potential to aid a lion.

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

राधा का भाई आने वाला है। ये विधानवाचक वाक्य है।

• राधा का भाई आने वाला है - विधानवाचक वाक्य
• विधानवाचक वाक्य - जिस वाक्य से किसी बात के होने का बोध होता है उसे विधानवाचक वाक्य कहते हैं।
  • वाक्य प्रयोग - निकित हमेशा आलस करती है।

Important Pointsअर्थ की दृष्टि से वाक्य के आठ भेद होते हैं -

सही उत्तर जया एक बुद्धिमान बालिका है। है। क्योंकि यह एक अशुद्ध वाक्य है।

Key Points

• जया एक बुद्धिमान बालिका है। अशुद्ध वाक्य है।
• उपर्युक्त वाक्य में लिंग सम्बन्धी त्रुटि है।
• यहाँ बुद्धिमान के स्थान पर बुद्धिमती शब्द आएगा।
• पूर्ण शुद्ध वाक्य होगा- जया एक बुद्धिमती बालिका है।

अन्य विकल्प-

• अन्य विकल्प अपने शुद्ध रूप में हैं।

Additional Information

The sentence is in active voice and to convert it in passive voice the predicate of the sentence becomes the subject.
Use structure “auxiliary + past participle”
As per the given above sentence is given in Passive Voice.
The dog was taken for a walk by her.
Hence , required answer will be option C .

We can say that ,
Use structure “subject + auxiliary + past participle + by + object”
The above given sentence is given in Passive Voice :-
A perfect dam has been built by them across the river.
Therefore ,required answer will be option B .

The word Grotesque (Adjective) means: strange in a way that is unpleasant: extremely ugly, unusual
Hence, the words grotesque and natural are antonyms. 

दिए गए विकल्पों में से विकल्प 3 "कोई नौकर" सही है। अन्य विकल्प सही नहीं हैं।

Key Points

• ऐसे सर्वनाम शब्द जो संज्ञा से पहले प्रयोग होकर उस संज्ञा शब्द की विशेषता बतलाते है, उन शब्दों को सार्वनामिक विशेषण कहते हैं।
  • जैसे:- कोई नौकर यहाँ से नहीं जाएगा।
• इस वाक्य से यह साफ हो जाता है कि कोई नौकर वाक्य सार्वनामिक विशेषण है।

Additional Information

• Meaning of Quarantine: To separate someone into isolation.
• Meaning of Rescue: save (someone) from a dangerous or difficult situation
• Meaning of Detention: the action of detaining someone or the state of being detained in official custody
• Meaning of Defence: the action of defending from or resisting an attack
• Meaning of Safety: the condition of being protected from or unlikely to cause danger, risk, or injury

Teetotaller means a person who never drinks alcohol.

A drone is a male bee. Unlike the female worker bee, drones do not have stingers and gather neither nectar nor pollen. A drone's primary role is to mate with an unfertilized queen.

• Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are discharged into the air.
• These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.
• Human activities are the main cause of acid rain.
• Over the past few decades, humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere.
• Power plants release the majority of sulfur dioxide and much of the nitrogen oxides when they burn fossil fuels, such as coal, to produce electricity.
• Besides, the exhausts from cars, trucks, and buses release nitrogen oxides and sulfur dioxide into the air. These pollutants cause acid rain.

Electron and proton were embedded in nucleus as said in watermelon experiment.

Parthenium hysterophorus is a noxious weed in America, Asia, Africa and Australia. This weed is known to cause many health hazards which have now reached epidemic proportions. This weed is considered to be a cause of allergic respiratory problems, contact dermatitis, mutagenicity in human and livestock. Crop production is drastically reduced owing to its allelopathy. Also aggressive dominance of this weed threatens biodiversity. 

The physical state of water at 10^°C is liquid state. Below 0^°C water is in solid state and above 100^°C water is in vapour state.

Sulfuric acid is commonly supplied at concentrations of 78, 93 or 98 percent. Sulphuric acid is sometimes referred to as the " King of chemicals " because it is produced. 

Counting Vibrations of a Tuning Fork
The number of vibrations of a tuning fork per second can provide information about the frequency of the wave. Here's a detailed explanation:
Frequency of a Wave:
- The frequency of a wave refers to the number of complete vibrations or cycles that occur in one second.
- It is typically measured in Hertz (Hz) or cycles per second.
- The frequency determines the pitch of a sound wave, with higher frequencies corresponding to higher pitches and lower frequencies corresponding to lower pitches.
Counting Vibrations:
- A tuning fork is a device that produces a specific pitch or frequency when struck.
- By counting the number of vibrations the tuning fork makes in one second, we can determine the frequency of the wave it produces.
- This can be done using various methods, such as using a stopwatch or a device specifically designed to measure frequency.
Importance of Frequency:
- The frequency of a sound wave is one of its fundamental characteristics.
- It helps us differentiate between different sounds and determine their pitch.
- By measuring the frequency of a tuning fork, we can compare it to the expected frequency and determine if it is in tune or not.
In conclusion, by counting the number of vibrations of a tuning fork per second, we can find the frequency of the wave it produces. This information is important for understanding the pitch of the sound and for tuning musical instruments.

• The chemical compound phenolphthalein has the formula C₂₀H₁₄O₄ and is commonly abbreviated as "HIn" or "phph" in shorthand notation.
• Phenolphthalein is frequently used as an indicator.
• It's a phthalein dye, which means it's a type of dye.
• Phenolphthalein in Acidic solutions turns colourless
• Phenolphthalein in basic solutions turns pink in colour. 

Explanation:

• Lime water is basic in nature. 
• Calcium hydroxide is the chemical term for lime water, which has the formula Ca(OH)₂.
• When Phenolphthalein, it turns pink as lime water is basic in nature.
• Hence, the correct answer is - Pink.

Type of Epithelial Cells Responsible for Absorption in the Intestine
The type of epithelial cells responsible for absorption in the intestine are columnar epithelium. Here is a detailed explanation:
1. Structure of Columnar Epithelium:
- Columnar epithelium is a single layer of tall, rectangular-shaped cells.
- These cells have elongated nuclei located near the base of the cells.
- They are tightly packed together, forming a barrier between the lumen (inside) of the intestine and the underlying tissue.
2. Function of Columnar Epithelium:
- Columnar epithelium is specialized for absorption and secretion.
- The tall shape of the cells increases the surface area available for absorption.
- Microvilli, tiny finger-like projections on the surface of the cells, further increase the surface area for absorption.
3. Absorption in the Intestine:
- The intestine is responsible for the absorption of nutrients from the digested food.
- The columnar epithelial cells lining the intestine play a crucial role in this process.
- Nutrients such as sugars, proteins, and fats are absorbed by these cells through active transport and diffusion.
- Once absorbed, the nutrients enter the bloodstream and are transported to various parts of the body to provide energy and support cellular functions.
4. Adaptations of Columnar Epithelium for Absorption:
- The presence of microvilli greatly increases the surface area for absorption.
- The columnar shape of the cells allows for efficient absorption and secretion.
- The cells are held together by tight junctions, preventing leakage of absorbed nutrients.
In conclusion, columnar epithelial cells are responsible for the absorption of nutrients in the intestine. Their specialized structure and adaptations enable efficient absorption of nutrients from the digested food.

Cartilage is not found in kidney. As cartilage is a structural component  of our body act as connective tissue which  is not required in the kidney. They are flexible connective tissue mainly found in ribs, ear, nose  etc.

We know, Phosphorus ( P) belongs to group 15 , Sulphur (S) belongs to group 16 and chlorine belongs to group ( 17) . So, option ( c) is the correct one.

The food chain is a sequence of populations or organisms through which food and energy are passed on an ecosystem with the members of each trophic levels. A food chain shows who is eating whom. Here, organisms of higher trophic level derive its nutrients from organisms of a lower trophic level.

A positively charged subatomic particle that is housed within the nucleus is caled Proton.

Arabari Project - Detailed Solution
Introduction:
The Arabari project, initiated in 1972, is an important conservation project in India. It focuses on the sustainable management of forests and wildlife.
Location:
The Arabari project is located in the state of West Bengal, India.
Objective:
The project aims to protect and restore the forest ecosystem, promote sustainable forestry practices, and conserve wildlife species in the Arabari forest region.
Key Features:
1. Afforestation: The project involves extensive afforestation efforts to increase the forest cover in the Arabari region.
2. Wildlife Conservation: It focuses on the conservation of various wildlife species, including endangered and threatened species.
3. Community Involvement: The project encourages active participation and involvement of local communities in forest management and conservation activities.
4. Sustainable Forest Management: It promotes sustainable practices such as selective logging, controlled grazing, and prevention of forest fires.
5. Research and Monitoring: The project conducts research and monitoring activities to assess the impact of conservation efforts and develop effective strategies.
6. Awareness and Education: It conducts awareness programs and educational campaigns to promote environmental conservation among local communities and stakeholders.
Impact:
1. Increase in Forest Cover: The Arabari project has successfully increased the forest cover in the region, leading to improved habitat for wildlife.
2. Wildlife Protection: The conservation efforts have resulted in the protection of various wildlife species, including the Bengal tiger, Indian elephant, and several bird species.
3. Livelihood Support: The involvement of local communities in conservation activities has created opportunities for sustainable livelihoods through eco-tourism and forest-based industries.
4. Carbon Sequestration: The project contributes to mitigating climate change by sequestering carbon dioxide through increased forest cover.
Conclusion:
The Arabari project, initiated in 1972 in West Bengal, has been instrumental in conserving forests, protecting wildlife, and promoting sustainable forest management practices. Its success lies in the active involvement of local communities and the implementation of various conservation strategies.