Indian Navy MR Mock Test - 7 - Airforce X Y / Indian Navy SSR MCQ

Iron is the second most abundant Metal in the earth's crust. It is found in the molten form inside the crust of the earth. In the presence of air and moisture, it forms it's oxide but the alloy of steel is widely used as pipes, it is unreactive in nature.

In cities a number of industries and vehicle emits large amount of dust and smoke that makes sky not so clear.

Photoelectric current is zero when the stopping potential is sufficient to repel even the most energetic photoelectrons with the maximum kinetic energy K_max​ so that K_max​=eV_0​
For a given frequency of the incident radiation, the stopping potential is independent of its intensity.

• It is the maximum friction, where a body just starts to move over the surface. 
• For example a large block of mass m is placed on a horizontal table. Apply a small force the block does not move due to the friction force which balances the applied force.
• Now Gradually increase the applied force until it start moving. This maximum applied force acting in opposite direction is called as Static Friction. 

Given Data:

Mass of each block: m = 250 g = 0.25 kg,

Spring constant: k = 2 N / m,

Initial velocities of blocks: v (in opposite directions).

When the two blocks move with velocity v in opposite directions, the system's kinetic energy is converted into potential energy stored in the spring at the point of maximum elongation.

The total kinetic energy of the two blocks is:

The potential energy stored in the spring at maximum elongation (x) is:

At maximum elongation, all the kinetic energy of the system is converted into potential energy:

• Let L be the width of the film. Since the film has two surfaces, the total length along which the surface force acts on the slider is 2L.
• The surface tension S in the film is defined as the ratio of the surface force F to the length d (perpendicular to the force) along which the force acts S=F/d
• Hence, in the case, d = 2L S=F/2L

The average rate of interest he pays is 186 x 100/1500 = 12.4%.

The average rate of interest being 12.4%, it means that the ratio in which the two amounts would be distributed would be 4:1 (using alligation). Thus, the borrowing at 12% would be Rs. 1200.

The data is insufficient, since we only know that the work gets completed in 200 boy days and 300 women days.

72.42 + 385.66 + 4976.38 = 5434.46

So Option D is correct

a*b = 5*275 and a+b = 80
(a+b)/(a*b) = 80/(5*275) = 16/275

The characteristics of a sound are :

(i) Loudness or intensity : it distinguishes between a loud or faint sound , and intensity , depends upon amplitude of sound waves .

(ii) Pitch : it distinguishes a sharp sound from a dull sound and pitch depends upon frequency.

(iii) Quality: it distinguishes between sounds generated by two sources .

Chlorine reacts rapidly with saturated hydrocarbons in the presence of sunlight.
One such reaction is,
CH₄ + Cl₂→ CH₃Cl + HCl (in the presence of sunlight). This reaction is also called chlorination reaction.

Let x be the number of boys and y be the number of girls in Ritu's class.
Based on the chocolate distribution,
3x + 4y = 124
Had she given 2 chocolates to each boy and girl:
2x + 2y = 124 - 52 = 72
Solving both equations, we get
x = 20 and y = 16
Ratio of girls to boys = y/x = 16/20 = 4 : 5

After offering a discount of 40%:
SP = 0.6 MP = 0.6 (1.4 C.P) = 0.84 CP
Loss = CP - SP
Loss = CP - 0.6 (1.4)
CP = CP - 0.84 CP = 0.16 CP
Therefore, there will be 16% loss.

Volume of given figure = Volume of cone + Volume of cylinder
Radius of cone = Radius of cylinder, r = 7 cm
Height of cone = h₁ = 9 cm
Height of cylinder, h = 30 - 9 = 21 cm

Volume of figure = 462 + 3234 = 3696 cm³

Total height = h
Number of turns = n
∴ Vertical spacing = h/h

In 1932, James Chadwick, an English physicist, discovered the neutron. He conducted a series of experiments involving the bombardment of beryllium with alpha particles, which led to the discovery of a neutral particle with a mass similar to that of a proton. This discovery provided crucial evidence for the existence of a neutral subatomic particle, the neutron, and contributed significantly to our understanding of atomic structure and nuclear reactions.

Answer: c

Exp: The Third Anglo-Maratha War (1817–1818) was the final and decisive conflict between the British East India Company and the Maratha Empire in India. The troops were led by the Governor General Hastings and he was supported by a force under General Thomas Hislop. It resulted in the formal end of the Maratha Empire and firm establishment of the British East India Company in entire India.

Rajasthan is the largest state of the Republic of India by area. It covers 10.4 % of India. Next to follow in terms of area are: Madhya Pradesh, Maharashtra, Andhra Pradesh and Uttar Pradesh 

Xu Haoliang from China has been appointed as the new Undersecretary-General and Associate Administrator of the UNDP. He brings valuable experience and expertise to his new role, having previously served in senior positions within the UNDP.

Anurag Verma, a senior IAS officer,recently assumed charge as the Punjab Chief Secretary. He succeeded Vijay Kumar Janjua in this role. Verma brings extensive administrative experience and aims to successfully implement pro-people policies of the elected government.

The 17^th Indian Cooperative Congress was inaugurated in New Delhi. Prime Minister Narendra Modi highlighted the government's efforts to strengthen the cooperative sector and promote the welfare of farmers during the event.

The World Bank's Board of Executive Directors has approved $1.5 billion in financing to accelerate India's development of low-carbon energy. The funding will support initiatives related to renewable energy, green hydrogen, and climate finance.

India aims to achieve net-zero emissions by 2070. This aligns with the country's commitment to phasing out fossil-based energy sources and transitioning towards a sustainable and low-carbon economy.

The India-France-UAE Maritime Partnership Exercise, the first-ever trilateral exercise, took place in the Gulf of Oman from 7th to 8th June 2023. This exercise aimed to enhance cooperation and strengthen maritime security among the navies of India, France, and the UAE.

The primary objective of the Nand Baba Milk Mission in Uttar Pradesh is to empower milk producers by providing them with a fair and reasonable price for their milk. This mission aims to improve the economic well-being of milk producers and make Uttar Pradesh a leading state in the field of milk development and production.

The Spinoza Prize is the highest distinction in Dutch science. It is awarded to individuals who have made remarkable contributions to their respective fields of research. Professor Joyeeta Gupta received this prestigious prize for her scientific work focusing on achieving a "just and sustainable world."

Jammu and Kashmir secured the first rank in the Union Territory (UT) category in the Food Safety Index 2022-23. This index assesses the performance of states and UTs in ensuring food safety. Jammu and Kashmir received this award for three consecutive years, highlighting their commitment to food safety standards.

India and Serbia have set a target to achieve bilateral trade of 1 billion euros by the end of the decade. This agreement was made during President Droupadi Murmu's state visit to Serbia, highlighting the shared understanding of each other's core interests between the two nations.

The integrated Water Resources Action Plan-2023-25 in Haryana represents a proactive step towards conserving water resources in the state. This plan was developed after a water conservation seminar attended by various departments and experts. It reflects the collective efforts and expertise in tackling the challenges related to water resources and conservation.