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Question 968

The Zamindari Right of Chakla Roshanabad was granted by the Nawab of Bengal to the ruler of Tripura during the reign of :

AMaharaja Dharma Manikya-II

BMaharaja Ratna Manikya

CMaharaja Gobinda Manikya

DMaharaja Dhanya Manikya

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A. Maharaja Dharma Manikya-IIExplanation not yet available.

Question 967

The king of Tripura as mentioned in 'Mukut', a drama written by Rabindranath Tagore , is

AMaharaja Gobinda Manikya

BMaharaja Krishna Manikya

CMaharaja Amar Manikya

DMaharaja Dhanya Manikya

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C. Maharaja Amar ManikyaExplanation not yet available.

Question 966

A Barometer can be used for : 1)Measuring atmospheric pressure 2)Determining altitudes 3)Measuring density of liquid 4)Weather forecasting

A1 only

B1,2 and 4 only

C1 and 4 only

D4 only

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B. 1,2 and 4 onlyExplanation: A barometer is an instrument used primarily for measuring atmospheric pressure. It helps in weather forecasting and determining altitudes (since atmospheric pressure decreases with height). A mercury barometer consists of a glass tube filled with mercury inverted in a mercury reservoir. When air pressure changes, the height of the mercury column changes accordingly. However, a barometer cannot measure the density of a liquid — that function is performed by a hydrometer.

Question 965

Bilirubin and Biliverdin are the pigments found in :

ABile

BPlasma

CRBC

DMuscles

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A. BileExplanation: Bilirubin and Biliverdin are yellow and green bile pigments respectively, found in the bile secreted by the liver. These pigments are produced during the breakdown of hemoglobin from old red blood cells (RBCs) in the liver and spleen. Biliverdin (green pigment) is first formed from the heme part of hemoglobin and is then reduced to bilirubin (yellow pigment). The bile containing these pigments helps in the digestion and emulsification of fats. Excess bilirubin in the blood causes jaundice, leading to a yellowing of the skin and eyes.

Question 964

A radar which detect the presence of an aircraft in sky uses :

ASound waves

BRadio waves

CUltrasonic waves

DInfrared rays

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B. Radio wavesExplanation: RADAR (Radio Detection and Ranging) works by using radio waves to detect and determine the distance, speed, and position of objects such as aircraft, ships, and vehicles. The radar system transmits radio waves, which travel through the air, hit an object, and get reflected back to the radar receiver. By measuring the time delay between transmission and reception, the radar calculates the object's distance and motion. Radio waves are ideal because they can travel long distances, penetrate clouds, and are unaffected by weather conditions.

Question 963

LASER is abbreviated form of :

ALight Absorption by Stimulated Emission of Radiation

BLight Absorption by Steady Emission of Radiation

CLight Amplification by Stimulated Emission of Radiation

DLight Amplification by Steady Emission of Radiation

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C. Light Amplification by Stimulated Emission of RadiationExplanation: The term LASER stands for Light Amplification by Stimulated Emission of Radiation. A laser produces a highly coherent, monochromatic, and intense beam of light by amplifying light through the process of stimulated emission. In this process, atoms or molecules in an excited state emit photons in phase with incoming photons, resulting in a strong, directed beam. Lasers are widely used in medicine, communication, industry, defense, and scientific research.

Question 962

The colour of sky without atmosphere will be :

ABlack

BWhite

CBlue

DGreen

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A. BlackExplanation: The colour of the sky without an atmosphere would appear black. On Earth, the sky looks blue because molecules in the atmosphere scatter sunlight — a phenomenon called Rayleigh scattering. Shorter wavelengths of light (blue and violet) are scattered more than longer wavelengths (red). However, if there were no atmosphere to scatter sunlight, no light would be diffused in all directions, and the sky would appear completely dark or black, just as it does from the surface of the Moon or in outer space.

Question 961

Which one of the following allows sound waves to travel comparatively faster at 0°C ?

AWater

BAir

CIce

DIron

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D. IronExplanation: Sound waves travel fastest in solids, slower in liquids, and slowest in gases. This is because the speed of sound depends on the elasticity and density of the medium — it travels faster when particles are tightly packed and can transmit vibrations more efficiently. Among the options, iron (a solid) allows sound to travel much faster (around 5130 m/s) than in water (1500 m/s), ice (3200 m/s), or air (331 m/s at 0°C).

Question 960

The phenomenon involved in propagation of light waves throuhg optical fibres is :

ADispersion of light

BScattering of light

CTotal internal reflection of light

DRefraction of light

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C. Total internal reflection of lightExplanation: The transmission of light through optical fibres is based on the principle of Total Internal Reflection (TIR). When light travels from a denser medium (core of the fibre) to a rarer medium (cladding) and strikes the interface at an angle greater than the critical angle, it gets completely reflected back into the core instead of refracting out. This continuous internal reflection allows light to travel long distances through the fibre with minimal loss, even when the fibre is bent. Optical fibres are widely used in telecommunication, internet data transfer, and medical endoscopy.

Question 959

Alcohol contains :

Anitrogen, hydrogen, oxygen

Bcarbon, hydrogen, oxygen

Coxygen, carbon, nitrogen

Dhydrogen, chlorine, oxygen

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B. carbon, hydrogen, oxygenExplanation: Alcohols are organic compounds composed of carbon (C), hydrogen (H), and oxygen (O). They are characterized by the presence of one or more hydroxyl (-OH) functional groups attached to a carbon atom. The general formula of alcohols is CnH2n+1OH. A common example is ethanol (C₂H₅OH), which is used in beverages, fuels, and sanitizers. The -OH group makes alcohols polar, soluble in water (especially lower alcohols), and reactive in many organic reactions.

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The Zamindari Right of Chakla Roshanabad was granted by the Nawab of Bengal to the ruler of Tripura during the reign of :

The king of Tripura as mentioned in 'Mukut', a drama written by Rabindranath Tagore , is

A Barometer can be used for : 1)Measuring atmospheric pressure 2)Determining altitudes 3)Measuring density of liquid 4)Weather forecasting

Bilirubin and Biliverdin are the pigments found in :

A radar which detect the presence of an aircraft in sky uses :

LASER is abbreviated form of :

The colour of sky without atmosphere will be :

Which one of the following allows sound waves to travel comparatively faster at 0°C ?

The phenomenon involved in propagation of light waves throuhg optical fibres is :

Alcohol contains :

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