Bihar PGT Chemistry Mock Test - 8 - Bihar PGT/TGT/PRT MCQ

The correct answer is Option 2. The correct spelling is ‘convenience’. 

पश्चिमी हिन्दी की कुल पाँच बोलियाँ हैं। यह एक तथ्य हैं।

दिए गए विकल्पों में सही उत्तर विकल्प A ‘द्विगु समास’ होगा। 

वह समास जिसका पहला पद संख्यावाचक विशेषण होता है तथा समस्तपद किसी समूह या फिर किसी समाहार का बोध करता है तो वह द्विगु समास कहलाता है।

तिरंगा : तीन रंगों का समूह

राष्ट्रीय स्तर पर स्वीकार्य एवं विभिन्न राज्यों के लोगों द्वारा अपनाई जाने वाली समृद्ध भाषा राष्ट्रभाषा कहलाती है। 

The correct answer is Liver. 

Key Points

• The liver is the largest gland in the human body.
  • It is made up of specialized cells called hepatocytes.
  • It is situated on the right side of the stomach in the human body.
  • The study of the liver is called hepatology.
  • It is the largest metabolic organ in the human body.
  • It is the organ that stores a large amount of vitamin A.
  • Ammonia and urea are produced in the liver.
  • Hepatitis is a viral disease that affects the liver.
  • The liver is known as the "chemical lab of the human body".
  • The liver is the highest temperature-producing organ.

Additional Information

• The brain is the center of coordination in the human body.
• The pancreas secretes enzymes and hormones.
  • Insulin and glucagon are the hormones secreted by Pancreas.
• The thyroid gland is the largest endocrine gland in the human body.
  • Thyroxin and calcitonin are the hormones secreted by the thyroid gland.
• Pituitary Gland
  • The pituitary gland is a gland that is located at the base of the brain and right behind the bridge of the nose. It is mainly responsible for sexual maturation, reproduction, etc.
  • The pituitary gland is also called the 'master endocrine gland' and it is a small pea-sized gland.
  • The pituitary gland is controlled by Hypothalamus. 
  • The hypothalamus sends signals to the pituitary to release or inhibit pituitary hormone production.
  • The pituitary is called the master gland because it controls various other glands.
  • Hence, it could be concluded that the pituitary gland is also called the 'master endocrine gland' because it regulates the activities of other endocrine glands.

The correct answer is Thymine and Cytosine.

Key Points

• The pyrimidines in DNA are C & T. In RNA, U replaces T.

• Cytosine (C) formula is C₄H₅N₃O and Thymine (T) formula is C₅H₆N₂O₂.

Additional Information

• Deoxyribonucleic acid, commonly known as DNA, is the hereditary complex molecule present in humans and almost all other organisms.
• The information in DNA (double helix structure) is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
  • DNA has two base pairs, A-T and G-C, attached to a sugar-phosphate backbone.
• DNA is a long molecule that contains our unique genetic code.
  • It holds the instructions for making all the proteins in our bodies and the function of living things.
• In the cell nucleus, the DNA (deoxyribonucleic acid) molecule is packaged into thread-like structures called chromosomes.
  • A chromosome (microscopic structure) is made up of DNA tightly coiled many times around proteins called histones that support its structure.
  • A chromosome has two arms - a p arm (short arm) and a q arm (long arm), joined in the location of the centromere.

Important Points

• Watson and Crick Proposed the Double Helix structure of DNA with the two strands connected by hydrogen bonds.

The correct answer is ​All of the above.

Key Points

• Rainbow revolution is an integrated development of crop cultivation, horticulture, forestry, fishery, poultry, animal husbandry, and food processing industry.

Additional Information

•  Yellow Revolution:
  • ​The Yellow Revolution is concerned with oilseeds production.
  • This revolution means the cultivation of mustard as a part of crop rotation.
  • The Father of the Yellow Revolution is Sam Pitroda.
  • It was launched in 1986.
• White Revolution:
  • ​Operation Flood is called the White Revolution in India.
  • The program to increase the production of milk is called White Revolution.
  • Father of White Revolution in India - Verghese Kurien.
  • Milkman of India - Verghese Kurien.
• Green Revolution:
  • ​Father of the Green Revolution- Norman Borlaug.
  • Father of the Green Revolution in India- M.S. Swaminathan.
  • It was launched in 1965.
  • This revolution led to an increase in food grain production.

• Blue Revolution:
  • The Blue Revolution was first launched in India as the 'Nili Kranti Mission' during the 7th Five Year Plan (1985-1990).
  • Fish Farmers Development  Agency (FFDA) was sponsored by the central government.
  • The Intensive Marine Fisheries Program was subsequently launched during the 8th Five Year Plan (1992-97).
  • As a result, the fishing harbors were later established over time in Vishakhapatnam, Kochi, Tuticorin, Porbandar, and Port Blair.
  • The scheme was restructured by the Ministry of Agriculture and Farmers Welfare along with the Department of Animal Husbandry, Dairying & Fisheries into 'Blue Revolution' by merging it with the other ongoing schemes.
  • The scheme was controlled by the National Fisheries Development Board (NFDB).

The correct answer is President of India.

• The President of India is the Supreme Commander of the Indian Armed Forces.
  • The Indian Armed Forces are under the management of the Ministry of Defense of the Government of India.

Additional Information

• The president is called the first citizen of the country.
  • Article 52 defines the president of India.
  • Article 54 is related to the election of the president.
  • Article 61 is related to the procedure for the impeachment of the president.
  • Article 72 is related to the power of the president to grant pardon.

The correct answer is A - 4, B - 1, C - 2, D - 3.

Key Points

• Local winds of India
  • Mango showers - in Kerala for the growth of mangoes.
  • Loo - hot dry winds from Rajasthan to western UP
  • Kalbaishakhi - thunderstorms in West Bengal and Assam
  • Winter Rainfall - Tamil Nadu receives rainfall in winter because of the retreating monsoon.

Additional Information

• Local Winds around the world
  • Chinook (snow eaters) - Rockies mountain
  • Foehn - Alps (hot dry)
  • Khamsin (Hot dry) - Egypt
  • Bora (cold-dry) - Hungary to North Italy
  • Blizzard (cold) - Tundra region
  • Norwester (hot) - New Zealand
  • Purga (cold) - Russia

Pietra Dura is a fine inlay work with semi-precious stones.

Important Points

• Pietra Dura is an elaborate architectural technique introduced by Shah Jahan during his reign.
• His reign is known as the Golden Age of the Mughal Architecture who built some of the extraordinary buildings and forts like the Taj Mahal, the Red Fort, Jama Masjid, and Shalimar Bagh.
• His buildings include Persian styles, fine white marbles, domes, symmetrical designs, curved lines, etc.
• One of the distinctive features of his building is Petra Dura or Parchin Kari where semi-precious stones like lapis lazuli, topaz, and onyx were carved into the fine marble to create different floral images.
• Pietra Dura inlays were prominent in the Red Fort at Delhi where a series of Pietra Dura were inlaid behind the emperor's throne.

Hence, we can conclude that Pietra Dura is a floral design embedded into marbles.

The logic followed here is:

In figure 1:

32 = (2 + 2) × 8

4 × 8

32

In figure 2:

24 = (3 + 1) × 6

4 × 6

24

Similarly,

In figure 3:

45 = (4 + ?) × 5 

4 + ? = 9

? = 9 - 4

? = 5

Hence, the correct answer is "5".

By using the symbols in the table given below, we can draw the following family tree:

We do not know the gender of Shanti. 
Clearly, Shaurya is the cousin of Karan.
Hence, ‘Cousin’ is the correct answer.

Bredig's arc method is a method of preparation of the colidal solution of metals such as silver, gold, platinum etc. Copper sol is not prepared using Bredig's arc method.

The negative electron gain enthalpy of fluorine is less than that of chlorine. It is due to small size of fluorine atom. As a result, there are strong interelectronic repulsions in the relatively small 2p orbitals of fluorine and thus, the incoming electron does not experience much attraction.

(a.c.d) Regardlessvehether a cell is a volatic or an electrolysis cell, anode s the electrode at which oxidation takes place and cathode is the electrode at which reduction takes place. In electrochemical cell, Zn → Zn²⁺ + 2e^- .

It is losing electrons thus, anode is negative terminal. In electrolysis cell. cation migrates to cathode thus -ye terminal. anion migrates to anode thus +ve terminal. 

O — H group is attached to (ene) is m ost a cidic and thus, has maximum intermolecular H-bonding.

The correct answer is option  D.
Milk is an emulsion with fat particles (globules) dispersed in an aqueous (watery) environment. The fat globules do not coalesce and form a separate layer (oil off or churn) because they are protected by a membrane layer which keeps the fat particles separate from the water phase.

Fluorine has highest electronegativity among all known elements, so it shows only negative oxidation states.

In oxymercuration-demercuration reaction, Markownikoff's addition of H₂O takes place with HO^- added to carbon where more stable carbocation could be formed.

Ozone is detected by using Hg.

Group 15 doping on group 14 element forms n type semiconductor due to excess electrons.

The correct answer is option C

Ce exist in the oxidation state other than +3 .

(a) B - Boron has +1 and +3 oxidation state.

(b) Al - Aluminium has +1,+2 and +3 oxidation state.

(c) Ce - Cerium has +3 and +4 oxidation state.

(d) Ga - Gallium has +1 and +3 oxidation state.

Cerium (Ce) have [Xe] 4f²6s² electronic configuration.

(S)-2-butanol is formed with specific rotation + 13.52°.

Rate constant is independent of concentration of reactant.

Vapor density = Molecular weight/2

As both the compounds have same molecular weights, both will have the same vapour density. Hence, gaseous density of both ethanol and dimethyl ether would be same under identical conditions of temperature and pressure. The rest of these three properties; Vapour pressure, boiling point and heat of vaporization will differ as ethanol has hydrogen bonding whereas ether does not.