Indian Army Nursing Assistant Mock Test - 4 - Indian Army Nursing Assistant MCQ

Current flows in a conductor due to the flow of negatively charged electrons. However, the direction of conventional current is taken to be opposite to the direction of flow of electrons. It can therefore be considered as the direction in which positive charges move.

The long straight wire and side AB  carry current in the same direction, hence will attract each other.
The long straight wire and side CD carry current in the opposite direction, hence will repel each other.
Force on side BC  will be equal and opposite to force on side DA.
Since CD  is farther from the wire than AB,  the force of attraction on  AB  will exceed the force of repulsion on CD.
Hence, there will be a net force of attraction on the loop ABCD and it will move towards the wire.

Explanation:The standard voltage and frequency of alternating current supply in India is set to 220 V and 50Hz respectively by the government of India becausewhen power has to be transmitted from a power plant, the biggest challenge is to cut the transmission losses. For this purpose, the current value should be small and potential difference(Voltage) should be more. Also losses are minimal at 50 Hz/60 Hz frequency.

UVA radiation is what makes people tan. UVA rays penetrate to the lower layers of the epidermis, where they trigger cells called melanocytes (pronounced: mel-an-oh-sites) to produce melanin. Melanin is the brown pigment that causes tanning. Melanin is the body's way of protecting skin from burning.

Light is refracted when it crosses the interface from air into glass in which it moves more slowly. Since the light speed changes at the interface, the wavelength of the light must change, too. The wavelength decreases as the light enters the medium and the light wave changes direction

Melting of ice is a reversible change while burning of matchstick, changing of milk into curd and germination of seed is chemical change.

Technetium is not a natural element; it is a synthetic element, meaning it is artificially created and does not occur naturally on Earth.

Double displacement reaction: If two reactants exchange their constituents chemically and form two products then the reaction is called double displacement reaction.

Law of conversation of mass:in a chemical reaction mass of reactants must be equal to the mass of products because atoms r neither created nor destroyed in a chemical reaction. This was proposed by Antoine lavoisier but experimentally proved by landolt.

Residential area, park and crop fields are very less polluted areas while industrial areas have large number of factories that emit harmful gases to cause air pollution.

Ammonia is oxidized to nitrogen (II) oxide in the presence of Pt/Rh gauze catalyst at a temperature of 500 K and a pressure of 9 bars. The nitrous oxide is then converted to nitrogen dioxide which is further reacted with water to produce nitric acid. The NO formed is recycled.

An oxidizing agent is the substance that is reduced in a redox reaction.

It is an example of a neutralization reaction in which an acid (carbon dioxide) reacts with base (calcium hydroxide) to form salt and water.

 

 

The general formula CnH2n+2 represents alkanes. Alkanes are saturated hydrocarbons with single covalent bonds between carbon atoms.

The three primary plant nutrients commonly applied to soils as commercial fertilizers are nitrogen (N), phosphorus (P), and potassium (K).

ψ has no physical significance while ψ2 represnts the probability density of finding an electron.

1 mole occupies a volume of 22.4 L at STP
Mass of 1 mole of a gas = Density x Volume
= 1.78 x 22.4 = 39.9 g

As per the concept of valence bond theory, the partial merging of atomic orbitals id knowns as overlapping. The extent of overlapping is directly proportional to the strength of the covalent bond, i.e. it is dependent.

Current is the rate of flow of charge. NaCl an ionic solid. An ionic solid consists of a lattice of Na+ and Cl ions in which these ions are fixed in their places. Solid NaCI does not contain any mobile charge carriers that can facilitate the flow of charge. But molten NaCI contains free mobile ions Na+ and Cl- ions which allow the passage of current.

Toluene is an aromatic compound. Aromatic compounds are characterized by the presence of a benzene ring or a similar structure. Toluene is often used as a solvent and is an important precursor in the production of many chemicals.

In the S-phase of the cell cycle, the amount of DNA doubles but the number of chromosomes remain same. So, DNA level here ranges from 3 picogram to 6 picogram, so amount is doubling.

The kidney is the excretory organ of the vertebrates. Each kidney has nearly one million complex tubular structures called nephrons, which are the functional units of the kidney and serve to filter wastes from the blood

• These are the chicken-like birds, that can only fly short distances at a time and can run through the brush quite well.
• Woodcock, turkeys, grouse and partridge are all gallinaceous birds.

Decay is one of the features which is not a property of living beings. It can take place only after the death of a person where metabolism, reproduction and growth are characteristic of living beings.

Answer:
The correct answer is B: Roughage.
Roughage, also known as dietary fiber, helps the body get rid of undigested waste. Here's how it works:
- What is roughage?
Roughage refers to the indigestible parts of plant-based foods, such as fruits, vegetables, whole grains, nuts, and seeds. It is not broken down by the digestive system and passes through the body relatively unchanged.
- How does roughage help in waste elimination?
1. Increases bulk: Roughage adds bulk to the stool, making it easier for the digestive system to move it along the intestine.
2. Stimulates bowel movements: The fiber in roughage stimulates the muscles of the digestive tract, promoting regular bowel movements.
3. Prevents constipation: Consuming adequate amounts of roughage helps prevent constipation by softening the stool and speeding up its passage through the intestines.
4. Removes toxins: Roughage can bind to toxins and waste products in the digestive system, helping to remove them from the body.
- Sources of roughage:
Some common sources of roughage include whole grains, legumes, fruits with edible skins or seeds, vegetables, nuts, and seeds. It is important to consume a variety of these foods to ensure an adequate intake of dietary fiber.
In conclusion, roughage plays a vital role in helping the body get rid of undigested waste by increasing bulk, stimulating bowel movements, preventing constipation, and removing toxins from the digestive system.

Proteins are essential for the formation and repair of body tissues. They are made up of amino acids and play a crucial role in the growth and maintenance of various body structures, such as muscles, organs, and skin.

Indian Cattle

Given Information:

The following options are given:

(i) Bos indicus

(ii) Bos domestica

(iii) Bos bubalis

(iv) Bos vulgaris

Indian cattle are a specific breed of cattle found in India. Let's analyze each option:

(i) Bos indicus: This is a scientific name for the Indian zebu cattle, which are commonly found in India. They are characterized by a hump on their back and large ears. This is a correct answer.

(ii) Bos domestica: This is not a specific breed of cattle. It is a term used to refer to domesticated cattle in general. This is not an Indian cattle.

(iii) Bos bubalis: This is a scientific name for the water buffalo, which is commonly found in India. Water buffalo is considered as Indian cattle. This is a correct answer.

(iv) Bos vulgaris: This is not a specific breed of cattle. It is a term used to refer to the wild ancestor of domesticated cattle, known as Aurochs. This is not an Indian cattle.

Conclusion:

The Indian cattle breeds are:

(i) Bos indicus

(iii) Bos bubalis

Answer:

Indian cattle breeds are (i) Bos indicus and (iii) Bos bubalis.

Explanation:
Using fertilisers in farming is an example of high cost production. Here's a detailed explanation:
Why is using fertilisers in farming a high cost production?
- Fertilisers are chemical substances that are added to soil or crops to provide essential nutrients for plant growth. They can be expensive to purchase and apply to crops.
- Fertilisers are often manufactured using complex processes, which require resources such as energy, water, and raw materials. These production costs contribute to the overall expense of using fertilisers in farming.
- The cost of fertilisers can vary depending on factors such as the type of fertiliser, its composition, and the quantity needed for a particular crop or field.
- Additionally, the application of fertilisers may require specialized equipment or labor, which adds to the overall cost of production.
Other considerations:
- While using fertilisers can increase crop yields and improve plant health, their excessive or improper use can have negative environmental impacts. This includes nutrient runoff into water bodies, soil degradation, and pollution.
- Farmers need to carefully consider the cost-effectiveness and environmental sustainability of using fertilisers, balancing the potential benefits with the associated expenses.
In conclusion, using fertilisers in farming is an example of high cost production due to the expenses involved in purchasing, manufacturing, and applying fertilisers to crops.