Bihar Police Constable Mock Test - 8 Free Online Test 2026

The word Meticulous (Adjective) means : paying careful attention to every detail; fastidious; thorough.
Careless in option (c) is the correct autonomy. 

में उनके स्थान पर क्रमशः अय्, अव्, आय्, आव् होता है।

उदाहरण-

1) ए + इ:- मते + इति = मत् अय् + इति = मतयिति।

2) ओ + इ:- धेनो + इति = धेन् अव् + इति = धेनविति।

3) ऐ + इ:- वन्दे + इति = वन्द् आय् + इति = वन्दायिति।

4) औ + इ:- बालौ + इति = बाल् आव् + इति = बालाविति।

The correct order will be:
People → of all professions (R)→ went to him (Q)→ for medicine and treatment (S)→ at his dispensary.(P)

Solar energy - Greenhouse effect - Incorrect

• The term ‘Greenhouse effect’ has been derived from a phenomenon that occurs in a greenhouse.
• A greenhouse looks like a small glasshouse and is used for growing plants, especially during winter.
• In a greenhouse, the glass panel lets the light in but does not allow heat to escape.
• Therefore, the greenhouse warms up, very much like inside a car that has been parked in the sun for a few hours. 
• The greenhouse effect is a naturally occurring phenomenon that is responsible for heating of Earth’s surface and atmosphere.
• Solar energy is trapped by the earth atmosphere and radiates slowly so as to cover our earth with a warm blanket.
• This is the natural process of the greenhouse effect on earth to maintain its temperature and makes the earth perfect for life.
• Without the greenhouse effect, the average temperature at the surface of Earth would have been a chilly –18°C rather than the present average of 15°C.
• Carbon dioxide, methane and water vapour are the major greenhouse gases that absorb the infrared radiation from the Earth and re-emit it.
• It is not caused due to solar energy but due to greenhouse gasses.

Thus, the solar energy-greenhouse effect is not the correct pair.

Additional Information

Fossil fuel-burning - Release of CO₂ - Correct

• Carbon dioxide (CO₂) is released into the atmosphere by respiration, the burning of fossil fuels for energy.
• In recent years, their quantities have increased significantly due to the burning of fossil fuels.
• The increased amount of CO₂ in the air is mainly responsible for global warming.

Nuclear power - Radioactive wastes - Correct

• Initially, nuclear energy was hailed as a non-polluting way of generating electricity.
• Later on, it was realised that the use of nuclear energy has very serious inherent problems i.e. the generation of radioactive waste.
• Safe disposal of radioactive wastes is important in nuclear power energy factories.
• Improper disposal of nuclear waste can cause serious physical and biological deformities in living organisms when directly exposed to them. 

Biomass burning - Release of CO₂  - Correct

• Biomass burning means the burning of living or dead vegetation.
• It happens during land cleaning in the agriculture process when crops are out of the field.
• In this process, a high amount of CO₂ is released into the environment.

ISO stands for International Organization for Standardization which is an international standard-setting body composed of representatives from various national standards organizations.

• Grant of taxation over lands: The Iqta system was a system of land distribution in the medieval Islamic world where officials were given control over land in exchange for military or administrative services. This was a grant of taxation over lands.


• Role of Muqti: The officer holding the charge of a large iqta was known as a Muqti. The Muqti was responsible for collecting revenue from the land and ensuring its proper administration.


• Significance of Iqta: The iqta was a piece of landed property received by a person from the state. It signified 'revenue assignments' and was a way for the state to compensate officials for their services.


• Conclusion: Therefore, all of the above statements regarding the Iqta system are correct. It was a grant of taxation over lands, the officer holding the charge of a large iqta was known as Muqti, and the iqta signified revenue assignments.

Malafide case is one which is undertaken in a bad faith.

he first blank suggests a messy ‘state’ because that is what causes ‘smirk and jokes’, hence, the right word is 'dishevelled' which means 'making clothes untidy'. This eliminates all other options.

Also, the second blank suggests a hint towards her and the right word to be used here is 'indicative', which means 'serving as a sign or indication'. This perfectly fits in the context.

Meanings of the given words:

Dishevelled (Verb): making clothes untidy.
Indicative (Adjective): serving as a sign or indication.
Reckless (Adjective): heedless of danger.
Predicting (Verb): say something that will happen in future.
Upbeat (Adjective): cheerful.
Releasing (Verb): allow or enable to escape from confinement.
Terrific (Adjective): of great size.
Amounting (Verb): come to be total.

So, the correct option is A.

Explanation:

• मिश्र वाक्य: एक ऐसा वाक्य होता है जिसमें एक से अधिक सरल वाक्य होते हैं और वे संयोजक शब्दों के माध्यम से आपस में जुड़े होते हैं। इस वाक्य में 'वह नहीं चाहता' और 'तुम्हारे साथ पढ़े' दो अलग-अलग विचार हैं, जो 'कि' शब्द द्वारा जुड़े हुए हैं।

इसलिए, यह वाक्य मिश्र वाक्य कहलाता है।

Correct Answer :- b

Explanation : Aurangzeb felt that he was superior not only had he become superior to administer the empire in a better way but also to protect and strengthen Islam particularly its Sunni faith. He was a strict follower of the Sunni sect not Shia.

Let us first learn the meanings of the given words:

Crucially (adverb): with decisive or vital importance.

Significant (adjective): sufficiently great or important to be worthy of attention.

Petty (adjective): of little importance.

The sentence implies that a large portion of the hospital bills was out of insurance coverage, thus ‘petty’ is contradictory. The use of ‘crucially’ is grammatically inapt as we need an adjective to qualify noun ‘portion’. The use of ‘obvious’ is contextually weak. Only ‘significant’ fits the blank grammatically and contextually.

Hence, option C is correct.

President Joe Biden has signed a $95 billion military aid package, featuring $61 billion for Ukraine, $26 billion for Israel, and $8 billion for the Indo-Pacific. Notably, the bill includes provisions targeting TikTok, giving parent company ByteDance nine months to sell the app before it’s banned in the US. Months of negotiation, lobbying by Ukrainian President Volodymyr Zelensky, and a split in the House Republican conference preceded the signing, posing challenges for House Speaker Mike Johnson’s leadership due to conservative opposition to increased aid for Ukraine.

Rulers of Vijayanagar
Deva Raya I reigned from 1406–1422 CE
Virupaksha Raya II reigned from 1465-1485
Vira Narasimha Raya reigned from 1505–1509
Krishnadevaraya reigned from 1509–1529
Tirumala Deva Raya reigned from 1565–1572 CE
Hence, the correct answer is option (A).

The correct answer is (a) - (ii), (b) - (iv), (c) -(i), (d) - (iii).

Key Points

Troposphere:  

• It is the lowest layer of the atmosphere - in which we live.
• It contains most of our weather - clouds, rain, snow.
• The lowest part of the Troposphere is called the boundary layer and the topmost part is called the tropopause.​

Stratosphere:

• This layer extends upwards from the tropopause to about 50 km.
• It contains much of the ozone in the atmosphere.
• The temperature in Stratosphere is highest over the summer pole and lowest over the winter pole.

Mesosphere:

• Above the stratosphere is the mesosphere. It extends upward to a height of about 85 km above our planet. Most meteors burn up in the mesosphere.
• The coldest temperature in the Earth's atmosphere, about -90 °C is found near the top of this layer.

Thermosphere: 

• This layer is found above Mesopause from 85 to 800 km.
• This is the warmest layer of the atmosphere.
• Aurora and satellites occur in this layer.

Exosphere​:

• ​This is the outermost layer of the atmosphere.
• It contains mainly oxygen and hydrogen atoms they are so few that they rarely collide.
• They follow ballistic trajectories under the influence of gravity, and some of them escape directly into space.

Ionosphere​:

• The ionosphere is a very active part of the atmosphere, and it grows and shrinks depending on the energy it absorbs from the Sun.
• The name ionosphere comes from the fact that gases in these layers are excited by solar radiation to form ions, which have an electrical charge.
• Due to the presence of ionized gasses, the ionosphere can reflect radio waves directed into the sky back toward the Earth.
• It overlaps the mesosphere, thermosphere, and exosphere.

Thus, the correct match is (a) - (ii), (b) - (iv), (c) -(i), (d) - (iii)

During the time of Rajaraja the share in the produce of the land was One- Third of total Produce.

Unscrupulous means having or showing no moral principles whereas conscientious means wishing to do one's work or duty well. Therefore, Unscrupulous is the antonym of Conscientious. 

The correct answer is Option 3, i.e Hydrofluorocarbons.

• Hydrofluorocarbons (HFCs) has the highest global warming potential as compared to other gases.
• Global Warming Potential (GWP) is used to measure the total energy that a particular gas absorbs over a particular period of time ( normally 100 years), compared to carbon dioxide. 
• Gases with a higher GWP absorb more energy, per pound, than gases with a lower GWP, and thus contribute more to warming Earth.
• The major atmospheric gases responsible for causing global warming are Carbon dioxide (CO2), Methane (CH4) and Nitrous Oxide.
• Hydrofluorocarbons (HFCs), Perfluorocarbons (PFCs) and Sulphur hexafluoride (SF6) are less prevalent GHGs but are very powerful.

The enlightened master, Kabir left his body in Maghar in January 1518, Magh Shukl Ekadashi according to the Hindu calendar in Vikram Samvat 1575. After Kabir's death his tomb was built at Magahar.

There are structural issues like lack of appropriate facility at primary centres, delays in referring patients [to specialists] and lack of transportation which lead to high infant deaths.” IndiaSpend analysed health data from 13 states to understand why so many infants and children die across the country.

The correct phrasal verb with verb ‘stem’ is ‘stem from’.

Stem from: to be caused by (something or someone).

Ex: Most of her health problems stem from an accident she had when she was five.

Hence, option A is correct.

सही उत्तर विकल्प 4 ‘हंस’ होगा।

Key Points

• ‘हंस’ शब्द पुल्लिंग है।
• अन्य शब्द गाय, बकरी, प्याली ये सभी स्त्रीलिंग शब्द हैं।

Additional Information

The verb phrase after "were sometimes" should be in the -ing (present-participial/continuous) form to fit grammatically: e.g., "were sometimes barking...", "were sometimes crying...".

Option A: Barking up the wrong tree is in the -ing form and fits both grammatically and contextually; it means pursuing a mistaken or ineffective course of action.
Option B: Stirred up a hornet’s nest is not in the -ing form. "Were sometimes stirred up a hornet’s nest" is ungrammatical in this construction.
Option C: Upset someone’s applecart is also not in the required -ing form and so is grammatically unsuitable here.
Option D: Crying wolf is grammatically possible (has the -ing form) but contextually less appropriate because it means raising false alarms; the intended sense is that the scientists were sometimes pursuing mistaken lines of recommendation, which is best captured by option A.

Final answer: A

• Sterile means barren-unable to produce any child or offspring; unproductive that means barren.
  Another meaning of it is not imaginative or creative.
• Barren means (used about land or soil) not good enough for plants to grow on
• Arid means (used about land or climate) very dry; with little or no rain
• Fertile means (used about land or soil) that plants grow well in
• Dry means without liquid in it or on it; not wet

Hence Correct Answer is Option A

U.S. tech giant IBM Inc. has tied up with the Ministry of Electronics and Information Technology to advance and accelerate innovation in AI, semiconductor and quantum technology.

One word substitution is Versatile.

Versatile: able to adapt or be adapted to many different functions or activities.
Nubile: sexually mature; old enough for marriage.
Exceptional: unusually good; outstanding.
Gifted: having exceptional talent or natural ability.
 

The primary aim of the BIMSTEC Faculties Exchange Programme in Dhaka is to "Boost Mutual Cooperation" among the member countries' Foreign Service training institutions by facilitating dialogue and collaboration among diplomats.

Japan became the first country to launch an electromagnetic railgun from an offshore vessel on October 17, 2023. The Japanese Maritime Self-Defense Force (JMSDF) in collaboration with the Acquisition Technology & Logistics Agency (ATLA), a division of the Japanese Ministry of Defense, successfully test-fired a medium-calibre maritime electromagnetic railgun from an offshore platform.