998 MCQ Questions in english हिन्दी

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Which of the following is responsible for the depletion of the ozone layer?

CFCs, commonly found in refrigerants and aerosol sprays, break down ozone molecules in the upper atmosphere, creating holes in the ozone layer — especially over the Antarctic region.

Which natural disaster is measured using the Richter scale?

Richter scale measures the magnitude of an earthquake.

Which international agreement aims to reduce global greenhouse gas emissions?

Kyoto Protocol (1997) was the first major global treaty to control GHG emissions.

The 3 R’s in waste management stand for:

The 3Rs aim to reduce environmental waste by promoting sustainable use.

Which Indian law deals with the protection of wildlife?

The Wildlife Protection Act provides legal protection to many species in India.

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Which of the following is an endangered species?

Tigers are on the endangered species list due to poaching and habitat loss.

Project Tiger was launched in:

Project Tiger was launched to conserve Bengal Tigers and their habitats.

The pH value of clean rainwater is approximately:

Pure rainwater is neutral (pH 7), but acid rain has lower pH due to pollution.

Which method is used for water conservation in agriculture?

Drip irrigation saves water by delivering it directly to plant roots.

Noise pollution is measured in:

Sound intensity is measured in decibels (dB); >85 dB is harmful.

Which of the following is a major pollutant from vehicles?

Incomplete combustion in engines releases toxic CO gas.

Which gas is the major contributor to the greenhouse effect?

CO₂ traps heat in the atmosphere, leading to global warming.

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The richest biodiversity hotspot in India is:

: Western Ghats is one of the 36 global biodiversity hotspots.

Which device converts electrical energy into mechanical energy?

: An electric motor uses electricity to create motion.

Which element is used in the manufacture of matchsticks?

Matchsticks contain sulphur for ignition.

. Which gas turns lime water milky?

CO₂ reacts with limewater (calcium hydroxide) forming calcium carbonate.

. Which part of the brain controls balance and coordination?

Which blood cells help in fighting infections?

WBCs are the immune cells that defend the body against infections.

In a certain arrangement, the word “GANGA” is rearranged as “AGGNA”. How would “SARASWATI” be rearranged?

The pattern is placing vowels at the start in the order they appear and consonants at the end in reversed order. “SARASWATI” → vowels: A, A, A, I → AASS, consonants: S, R, S, W, T → IRWAT Thus, it becomes AASSIRWAT.

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Which number will replace the question mark? Series: 8, 16, 32, 64, ?

It is a geometric progression: each number is multiplied by 2. 64×2 = 128. It tests pattern recognition under multiplication.

Commerce is concerned with—

Commerce bridges the gap between producers and consumers.

Which business structure has limited liability?

Liability of members is limited to their shareholding.

What does ‘entrepreneur’ mean?

An entrepreneur starts and runs a business, often with innovation and risk.

Which is the oldest form of business organization?

It is the simplest and oldest form, owned and controlled by one person.

What is the primary aim of a business?

Profit is the core objective for sustainability and growth in business.

If RAEBARELI is written in reverse alphabetical order, what is the output?

Each letter is replaced with its reverse alphabet value (A=Z, B=Y, C=X,...). R→I, A→Z, E→V, B→Y... etc. Using this transformation gives IZVYIZOVR. This is a complex letter-replacement reasoning type.

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Choose the odd one out: Lucknow, Kanpur, Varanasi, Yamuna

Lucknow, Kanpur, and Varanasi are cities in UP, while Yamuna is a river. It is the only non-urban entity among the options. Odd-one-out questions often use thematic categorization.

If each vowel in the word “UTTAR PRADESH” is replaced by its next alphabet and consonants by the previous one, what will be the result? A.

Vowels (A, E, U) → next alphabet = B, F, V. Consonants → previous alphabet (T→S, P→O, R→Q, etc.). After substitution, we get: VSSBQ QSBDEFT.

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