Indian Army Nursing Assistant Mock Test - 2 - Indian Army Nursing Assistant MCQ

(t₁ = 1 minute; t₂ = 30 second given)

Concept:

Newton's law of gravitation: The force of attraction between any objects in the universe is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

• The force acts along the line joining the two bodies.
• The gravitational force is a central force that is It acts along the line joining the centers of two bodies.
• It is a conservative force. This means that the work done by the gravitational force in displacing a body from one point to another is only dependent on the initial and final positions of the body and is independent of the path followed.

• The moon revolves around the earth in a circular orbit (not perfectly circular). Sun exerts a gravitational force on both, the earth and moon. The major force acting on the moon is due to the gravitational force of attraction of the sun and earth and the moon is not always on the line joining the sun and earth. 
• Two forces acting on the moon have different lines of action or the forces are not central, so it's motion will not be strictly elliptical.

Hence, option (2) is the correct answer.

When liquid molecules are attracted strongly to themselves and weakly to those of solids, it costs lots of energy to create liquid-solid surface and liquid then does not wet the solid.
For Example: Mercury molecules (which make an obtuse angle with glass) have a strong force of attraction between themselves and a weak force of attraction toward solids. Hence, they tend to form drops. 
On the other hand, water molecules make acute angles with glass. They have a weak force of attraction between themselves and a strong force of attraction toward solids. Hence, they tend to spread out.

In the given graph temperature remains constant with variation in volume. So the process is isothermal and PV = constant.

When the food containing fats and oils starts giving unpleasant taste and smell due to oxidation, then the food becomes rancid.

The postulates of Dalton’s Atomic theory that is the result of the law of conservation of mass in the relative numbers and kinds of atoms are constant in a given compound. Atoms cannot be created nor destroyed in a chemical reaction.

The substances that pollute the natural substances like air, water and soil are called pollutant. Exhaust from industries and vehicular emission are some common pollutants.

In the gas state, the nitric acid molecule has a triangular planar shape with a steric number of 3 no lone pairs of electron. There are two major resonance forms of nitric acid.

Oxidation is the loss of electrons during a chemical reaction.

Carbon can form bonds with other carbon atoms, leading to the formation of allotropes. Allotropes are different forms of the same element with varying structural arrangements. Examples of carbon allotropes include diamond, graphite, and fullerenes.

The element with atomic number(Z) 17 & mass number (A) 35 is chlorine = 

(A): Zn + 2HCl → ZnCl₂ + H₂
1 mole of Zn produces 2 g of H₂
0.5 mole of Zn will produce 1 g of H₂
(B): C₇₀H₂₂
Molar mass - 862
Mass of atoms = 862/6.023 x 10²³ = 1.43 x 10^-21 g
(C): 70 g of CI₂ = 6.023 x 10²³ molecules
35.5 g of CI₂ = 3.01 x 10²³ molecules
(D): Molar mass of SO₂ = 64 = 1 mole
64 g of SO₂ = 6.023 x 10²³ molecules

A positive overlap results in bond formation. When 2 p-orbitals are in phase, both the positive lobes overlap, thus creating a positive overlap and result in the bond formation, thus it is called in-phase overlap.

2NaOH + 2Al + 2H₂O ⇨ 2NaAlO₂ + 2H₂

Ethanol is commonly used as an antiseptic and disinfectant. It has antimicrobial properties and is effective in killing bacteria and viruses.

In paracrine signaling, signaling cell and target cell both differ.

• Sparrow flies at low heights.
• Sparrow flies at 46 km/h

Aquatic animals use gills for respiration. The gills absorb oxygen from the air dissolved in water.

Heat stroke is the most serious form of heat injury and is considered a medical emergency. It can kill or cause damage to brain and other internal organs. It results from prolonged exposure to high temperatures usually in combination with dehydration which leads to failure of the body's temperature control system. In case of heat stroke, one should immediately rehydrate the person with a solution of salt, sugar and lime juice or juice of an unripe mango. This will replenish salt and water that the person has lost through sweating.

Deficiency Diseases: Rickets and Osteomalacia

Rickets is a deficiency disease that occurs in children, while osteomalacia is a similar condition that affects adults. Both of these conditions are caused due to a deficiency of Vitamin D.

• Rickets and osteomalacia occur when the body does not get enough Vitamin D.


• Vitamin D is essential for the body to absorb calcium and phosphorus from the diet. Without sufficient Vitamin D, the body cannot maintain proper levels of these minerals, leading to the development of rickets in children and osteomalacia in adults.


• The primary cause of Vitamin D deficiency is a lack of exposure to sunlight, which is necessary for the body to produce Vitamin D.


• Inadequate dietary intake of Vitamin D-rich foods, such as fatty fish, egg yolks, and fortified dairy products, can also contribute to the development of these deficiency diseases.

• Rickets in Children:
  
  
  
  • Bowed legs
  
  
  • Delayed growth
  
  
  • Delayed tooth formation
  
  
  • Softening and weakening of bones
  
  
  
  


• Osteomalacia in Adults:
  
  
  
  • Widespread bone pain
  
  
  • Muscle weakness
  
  
  • Fragile bones
  
  
  • Easily fractured bones
  
  
  
  

• Treatment for rickets and osteomalacia involves correcting the Vitamin D deficiency:


• Supplementation with Vitamin D supplements


• Increased exposure to sunlight


• Consuming foods rich in Vitamin D


• Prevention can be achieved by:


• Ensuring adequate sun exposure


• Including Vitamin D-rich foods in the diet


• Regularly monitoring Vitamin D levels

Therefore, the correct answer is B: Vitamin D.

Vitamin A is essential for proper vision. Its deficiency can lead to a condition called night blindness, where individuals have difficulty seeing in low light conditions.

Weeds affect the crop plants by:

Killing of plants in the field before they grow:
- Weeds can outcompete crop plants for sunlight, water, and nutrients, leading to the death of young crop plants before they can establish and grow.

Dominating the plants to grow:
- Some aggressive weed species can grow rapidly and form dense stands, dominating the available space and resources, which hinders the growth and development of crop plants.

Competing for various resources of crops (plants) causing low availability of nutrients:
- Weeds compete with crop plants for nutrients, water, and space. This competition can result in limited availability of essential resources for the crop plants, leading to stunted growth, reduced yields, and overall poor crop health.

All of these:
- Weeds can have a combined impact on crop plants, including killing young plants, dominating available space, and competing for vital resources. This comprehensive effect can severely affect crop productivity, quality, and economic value.

In conclusion, weeds can have a detrimental impact on crop plants by killing young plants, dominating growth space, and competing for essential resources. It is crucial for farmers to implement effective weed management strategies to minimize the negative effects of weeds and ensure optimal crop growth and productivity.