GK & Language (Paper-1) Mock Test - 4

Volta (Italian) invented the battery in 1880. The research on electromagnetism and any practical use of electricity would require a source of continuous current, which was not available until 1800, when Alessandro Volta invented the first electric pile, the forerunner of the modern battery.

The solar interior includes the core, radiative zone and convective zone.
The photosphere is the visible surface of the Sun.
The solar atmosphere also includes the chromosphere and corona.

Polishing: If we polish a surface, it becomes smooth and friction is reduced. Through polishing, unevenness of the surfaces is reduced.
Lubricating: By applying lubricants (like oil) to surfaces, friction is reduced. When we apply lubricant to surfaces, a thin layer of lubricant is formed over there and moving surfaces do not directly rub against each other.
Using ball bearings: This way of reducing friction involves the principle that an object is rolled instead of sliding. The use of ball bearing converts sliding friction into rolling friction.

The kelvin (symbol: K) is the base unit of temperature in the International System of Units (SI). One kelvin is formally defined as 1/273.16 (3.6609 x 10^-3 ) of the thermodynamic temperature of the triple point of pure water (H₂O).

The organ that excretes water, fat and various catabolic wastes is the skin. The skin excretes waste by perspiration or sweating and letting the salts out by opening the pores.

Typhoid fever is caused by the bacterium Salmonella typhi, and not by any virus.

Plants carry on photosynthesis during the day and respiration all the time. For the process of photosynthesis, plants need sunlight to produce food, so it is done during the day and respiration is done all time.

Nitrogen is used by plants in the form of nitrate. It is important for nitrites to be converted to nitrates because accumulated nitrites are toxic to plants.

Nitrous oxide is the chemical name of laughing gas. It is a chemical compound with the formula N₂O. It is an oxide of nitrogen. At room temperature, it is a colourless, non-flammable gas, with a slightly sweet odour and taste. It is used in surgery and dentistry for its anesthetic and analgesic effects.

Glass is sometimes called a supercooled liquid because it does not form a crystalline structure, but instead forms an amorphous solid that allows molecules in the material to continue to move.

Curd is sour due to the presence of Lactic acid. The increased acidity causes the milk proteins to tangle into solid masses, or curds. Yogurt, which is made by curdling cow's milk with purified cultures of beneficial bacteria, is inherently more acidic than milk. The acid found in curd is lactic acid.

CFCs are entirely anthropogenic in origin. CFCs are phased out via the Montreal Protocol due to their part in ozone depletion. However, the atmospheric impacts of CFCs are not limited to its role as an active ozone reducer. This anthropogenic compound is also a greenhouse gas, with a much higher potential to enhance the greenhouse effect than CO₂.

Leather belts are biodegradable. Leather biodegrades slowly—taking 25 to 40 years to decompose.
Leather is an organic material that is turned into an inorganic material through tanning process. Essentially, collagen cells are neutralised to prevent them from degrading at a natural speed. Genuine leather comes from the cattle hide and hence is biodegradable.

Velavadar National Park or Blackbuck National Park is situated in the Bhavnagar District of Gujarat state, India. Established in 1976 in the Bhal region of Saurashtra, the park is located around 42 km from the district headquarters city of Bhavnagar.

Kota - Chambal - Chambal river flows from Madhya pradesh, to Rajasthan(Kota) and then finally meeting Yamuna in Uttar pradesh.
Jabalpur - Narmada - Narmada river flows through district of Jabalpur, developing and agrarian economy.
Surat - Tapti - Tapti river flows from district of Surat.
Whereas, River Mahanadi does not flow from Bhubaneshwar district.

McMahon Line is currently the effective boundary between China and India, although its legal status is disputed between the Indian and the Chinese government. The line is named after Henry McMahon, foreign secretary of British India and the chief negotiator of the convention at Simla.

Raja Todar Mal was the Finance Minister of the Mughal empire during Akbar's reign. He was one of the Navaratnas in Akbar's durbar (court). Raja Todar Mal introduced standard weights and measures, a land survey and settlement system, revenue districts and officers. This system of maintenance by Patwari is still used in Indian Subcontinent which was improved by British Raj and Government of India.

Gandhi joined the Indian National Congress and was introduced to Indian issues, politics and the Indian people primarily by Gokhale. Gokhale was a key leader of the Congress Party best known for his restraint and moderation, and his insistence on working inside the system. Gopal Krishna Gokhale was a mentor to both Mohammed Jinnah and Mahatma Gandhi.

Mahatma Gandhi was assassinated on 30 January 1948 in the compound of Birla House, a large mansion. His assassin was Nathuram Vinayak Godse, a right-wing advocate of Hindu nationalism, a member of the political party the Hindu Mahasabha and a past member of the Rashtriya Swayamsevak Sangh (RSS), which he left in 1940 to form an armed organization. Godse had planned the assassination.

The Fundamental Rights in its basic nature are rights enforceable by the Courts of Law and any act of State or Law that violates fundamental rights are ultra vires.

Right to property is not a political right of a citizen of India, it is a legal right. It is made a constitutional right under Article 300A which states that no person can be deprived of his / her property except by authority of law.

According to the representation of people Act 1950-1951, recognition to a political party is one of the functions of Election commission.

Glaucoma is a multi-factorial, complex eye disease with specific characteristics, such as optic nerve damage and visual field loss. While increased pressure inside the eye (called intraocular pressure or IOP) is usually present, even patients with normal range IOP can develop glaucoma.Glaucoma is a multi-factorial, complex eye disease with specific characteristics, such as optic nerve damage and visual field loss. While increased pressure inside the eye (called intraocular pressure or IOP) is usually present, even patients with normal range IOP can develop glaucoma.

Osteoporosis is the thinning of bone tissue and loss of bone density over time. It is the most common type of bone disease and is caused due to deficiency of vitamin D.

The Tehri Dam is the highest dam in India and one of the highest in the world. It is a multi-purpose rock and earth-fill embankment dam on the Bhagirathi River near Tehri in Uttarakhand, India.

Answer can be arrived at from, "... and to save his life he ran from the battle field ...". Here, 'he' refers to the king.

Refer to "... a spider which tried to make it to the roof ..." for answer.

Refer to "he hid himself in a cave" for the correct answer.

Refer to the sentence "At the seventh attempt, the spider was successful," for the correct answer.

'Interested,' which means to have curiosity to know something, is the opposite of 'bored'.

'As ... as' denotes equal position or positive degree which uses the base form. Hence, option (1) is the correct answer.

The possessive pronoun of 'citizen' is 'his'.

The noun 'sugar' is an uncountable noun. So, 'too much' will be used here.

'To go about something' means 'to start dealing with a problem in a particular way'. Simple past form of 'go' is 'went'. Other options are grammatically incorrect.

Options (3) and (4) are grammatically incorrect. From (1) and (2), 'does' will be used with the singular subject 'servant' here.

Pronoun "I" takes "am" in sentences of present progressive tense (writing this letter).
Option (3) would create an error of subject-verb agreement.

The given sentence relates to the present progressive tense.
(1) and (2) are incorrect as these would lead to errors of subject-verb agreement.
(3) is incorrect as it would make the sentence logically incorrect.

The past perfect is a verb tense used to talk about actions that were completed before some point in the past. In the past perfect tense, had + [past participle] is used. So, the correct answer is 'had missed'.

A person who wastes his money on luxuries is an extravagant.

'Cellar' (basement) is a room below the ground level in a house, often used for storing coal or wine.

'Mediocre' is 'one who is neither intelligent nor dull; of average quality'.

If the main part of the sentence is negative, then the question tag is positive. The question tag uses the same verb as the main part of the sentence. So, the question tag would be 'is she?'

If the main part of the sentence is positive, then the question tag is negative. If the main part of the sentence does not have an auxiliary verb, then the question tag uses an appropriate form of 'do'. 

If the main part of the sentence is positive, then the question tag is negative. If the main part of the sentence does not have an auxiliary verb, then the question tag uses an appropriate form of 'do'.

Correctly sequenced sentence: ''All through the long warm summer days an ant was very busy collecting and storing up food for the winter.''

Correctly arranged sentence: ''The man had been a sportsman throughout his educational career and received many prizes and medals in competitions.''

The correct spelling is - Auxiliary. It means 'providing supplementary or additional help and support'.

The plural of 'cactus' is 'cacti'.

The plural of 'phenomenon' is 'phenomena' as the plural of 'event' is 'events'.