Indian Army Nursing Assistant Mock Test - 1 - Indian Army Nursing Assistant MCQ

Among all these 4 forces the Strong nuclear force also called strong nuclear interaction is the strongest one in comparison of the other three.

• It is because it binds the fundamental particles of any matter together to form larger particles.
• Fundamental particles mean protons and neutrons.
• Quarks are made up of protons and neutrons and this strong nuclear force holds together the quarks.
• The strong nuclear force also binds the proton and neutrons to the nucleus of the atom.
• Also, a small strong force acts between protons and neutrons.
• As protons repel each other due to having the same charges, the strong forces also keep them together.

This strong force will operate only when the subatomic particles are extremely close to each other, which is approximately 10^-15.

So, like this, the strongest fundamental force is nature keeps nature balanced by keeping the matter in a stable form.

Additional Information: In nature, there are 4 fundamental forces. Every fundamental force plays vital importance to drive nature smoothly and knowingly or unknowingly we experience them in everyday life. A force is weak or strong which depends on the type of force it is having fundamentally.
The 4 fundamental forces are:
1. Gravitational force
2. The weak force or the weak nuclear force
3. Strong nuclear force or the strong nuclear interaction
4. Electromagnetic force 

No external force is acting, there fore, momentum is conserved.
By momentum conservation, 50u + 0.5 × 2 = 0 where u is the velocity of man.

Negative sign of u shows that man moves upward.
Time taken by the stone to reach the ground

∴ when the stone reaches the floor, the distance of the man above floor = 10.1 m

Average acceleration

< a > = 5 m/sec²

The situation is as shown in the figure.

p_initial = mu,p_final = −mu
Impulse imparted to the ball = change in momentum = p_initial = mu,p_final
 = −mu − mu = −2mu

It is easier to pull lawn mower than to push it . All other statements are true.

Melting of ice is a physical change because no new substance is formed.

Atoms are composed of three main subatomic particles: protons, neutrons, and electrons. Protons and neutrons are found in the nucleus of the atom, while electrons orbit the nucleus in distinct energy levels or orbits.

Lead (II) sulfate PbSO₄ 

Two laws are followed in this question.

Addition of harmful substances in water to make it unfit for human consumption is called water pollution. Harmful substance includes domestic and industrial sewage

Treating copper chips with concentrated nitric acid releases toxic brown gas, NO₂, nitrogen (IV) oxide. It is a reddish-brown gas with pungent odor.

Reduction is the gain of electrons during a chemical reaction.

Bases generate hydroxide ions or OH^- ions in water. Thus option C is correct

 

 

Carbon is the basis of organic chemistry. Organic compounds contain carbon atoms bonded with other elements such as hydrogen, oxygen, nitrogen, etc. This unique property of carbon allows it to form a wide variety of compounds.

Abrasives are substances or objects used to wear down or rub down other objects to achieve the desired size, shape, or finish. They play a crucial role in various industrial processes, including metalworking, woodworking, and finishing.

Atomic no 24 is of Cr. Due to half filled orbital stability it doesnot follow Afbau rule so its configuration is 

Molar mass of O₂ = 32 g mol^-1
32 g of O₂ = 6.023 x 10²³ molecules
40 g of O₂ =  = 7.529 x 10²³ molecules
Mass of 6.023 x 10²³ molecules of CO₂ = 44 g
Mass of 7.529 x 10²³ molecules of CO₂

The molecule that is formed from the same element is known as a homonuclear molecule and the molecule that is made up of 2 atoms is called a diatomic molecule. But HCl is not a homonuclear diatomic molecule as it has different atoms.

Non-metals do not react with acids. Thus, option D is correct.

Alcohols have the functional group -OH (hydroxyl) attached to a carbon atom. This functional group is responsible for the characteristic properties of alcohols.

Meiosis I is reduction in which separation of homologous chromosomes occur, while Meiosis II is equational division, just like mitosis in which separation of sister chromatids occur.
Eg.

During ventricular systole, blood from the left ventricle moves out to the systemic circulation. Deoxygenated blood from the right ventricle moves out into the pulmonary artery to reach the lungs.

• The wing structure of bats and birds differs.
• Birds have feathers projecting back from lightweight, fused arm and hand bones.
• Bats have flexible, relatively short wings with membranes stretched between elongated fingers.

Presence of specific features or certain habits, which enable an organism to live naturally in a place is called adaptation. Adaptation of organisms differ depending on their place of dwelling. That is why a fish cannot live out of water and camel cannot live in sea. 

Skull has many joints but all of these are fixed joints which do not show any movement at all.

Malnutrition is a condition that results from eating a diet in which one or more nutrients are either not enough or are too much such that the diet causes health problems. It may involve calories, protein, carbohydrates, fat, vitamins or minerals

Carbohydrates are the primary source of energy in our diet. When consumed, they are broken down into glucose, which is used by the body as a fuel to carry out various functions.

Mixed cropping and intercropping:
Mixed cropping and intercropping are two agricultural practices where multiple crops are grown simultaneously on the same field. While both methods involve growing multiple crops together, intercropping differs from mixed cropping in the following ways:
Different crops in different rows:
- In intercropping, the different crops are grown in different rows, alternating with each other. This means that the crops are not mixed randomly but are strategically placed in separate rows.
- This arrangement allows for better utilization of resources such as sunlight, water, and nutrients, as the crops have different growth patterns and requirements.
- It also helps to minimize competition between crops for resources, leading to higher overall yields.
Reducing risk and providing insurance:
- One of the main advantages of intercropping is that it reduces the risk of crop failure.
- By growing different crops together, farmers can spread their risk and have a backup in case one crop fails.
- This provides insurance against the failure of a single crop and helps to stabilize agricultural production.
Other benefits of intercropping:
- Intercropping also has other advantages such as increased biodiversity, pest and disease management, and improved soil health.
- The presence of multiple crops can attract different beneficial insects that help in natural pest control.
- Some crop combinations also have a synergistic effect, where the growth of one crop benefits the growth of another.
- Additionally, intercropping can help improve soil fertility by fixing nitrogen, reducing soil erosion, and enhancing nutrient cycling.
In summary, while both mixed cropping and intercropping involve growing multiple crops together, intercropping differs from mixed cropping by strategically arranging different crops in separate rows and providing risk reduction and insurance against crop failure. Intercropping also offers additional benefits such as increased biodiversity, pest management, and improved soil health.

Scientific Name of Honeybee Used in Commercial Production of Honey:


Explanation:
The scientific name of the honeybee species commonly used in the commercial production of honey is Apis mellifera. Here's a detailed explanation:
- Apis mellifera is the most widely recognized and studied species of honeybee.
- It is native to Europe, Africa, and the Middle East but has been introduced to various parts of the world for honey production.
- The species name "mellifera" refers to its ability to produce and store honey.
- Apis mellifera is highly valued for its honey production, as well as for its role in pollination, which is vital for the reproduction of many flowering plants.
- The honeybees of this species are known for their complex social structure, with a queen, drones, and worker bees.
- They build intricate hexagonal wax combs to store their honey and raise brood.
- Apis mellifera has been selectively bred over generations to enhance desirable traits such as honey production and docility.
- It is the species most commonly managed and used by beekeepers for honey production on a commercial scale.
Therefore, the correct answer is B: Apis mellifera.

The Human Heart Chambers:
- The human heart has 4 chambers.
- These chambers are divided into two sides: the left side and the right side.
- Each side of the heart consists of an atrium (upper chamber) and a ventricle (lower chamber).
- The left side of the heart contains the left atrium and the left ventricle.
- The right side of the heart contains the right atrium and the right ventricle.
- The atria serve as receiving chambers for blood returning to the heart, while the ventricles act as the pumping chambers.
- The right atrium receives oxygen-depleted blood from the body and pumps it into the right ventricle.
- The right ventricle then pumps the oxygen-depleted blood to the lungs for oxygenation.
- The left atrium receives oxygen-rich blood from the lungs and pumps it into the left ventricle.
- The left ventricle then pumps the oxygen-rich blood to the rest of the body.
- The separation of the chambers prevents oxygen-rich and oxygen-depleted blood from mixing.
- Valves located between the chambers ensure the flow of blood in the correct direction.
- The heart's pumping action is essential for delivering oxygen and nutrients to all parts of the body.