What is a spectrograph?

A spectrograph is an optical instrument that divides incoming light into its individual wavelengths and records the result as a spectrum using a detector.

Are spectrographs used in astronomy?

Yes, spectrographs are used in astronomy to analyse light from stars and galaxies and determine their chemical composition, temperature, velocity, and other characteristics.

Can spectrographs detect Doppler shift?

Yes, spectrographs can detect changes in the wavelength of spectral lines caused by the Doppler effect, helping astronomers calculate the velocity of celestial objects.

What is MAVEN mission?

MAVEN stands for Mars Atmosphere and Volatile Evolution. It studied Mars atmosphere and helped scientists understand how Mars changed from a warmer, wetter world into the cold and dry planet seen today.

When did MAVEN start orbiting Mars?

The MAVEN spacecraft had been orbiting Mars since September 21, 2014.

Has NASA ended the MAVEN mission?

Yes, NASA officially ended the MAVEN mission after determining that the spacecraft was no longer recoverable following an unexpected loss of contact in late 2025.

What is Bharat Forecast System?

The Bharat Forecast System is India's indigenous high-resolution weather model designed to generate forecasts at the cluster panchayat level and improve extreme weather prediction accuracy.

What is the resolution of Bharat Forecast System?

The Bharat Forecast System operates at 6 km horizontal resolution using the Triangular Cubic Octahedral dynamical grid.

Who developed Bharat Forecast System?

The Bharat Forecast System was developed by scientists from Indian institutes such as IITM Pune, with assistance from NCMRWF Noida and the India Meteorological Department.

Why is wrapping food in newspapers unsafe?

Wrapping food in newspapers is unsafe because newspaper ink may contain heavy metals, solvents, pigments, binders, additives, phthalates, mineral oils, and synthetic dyes that can migrate into food.

Why are hot and oily foods more risky when wrapped in newspaper?

Hot, oily, or moist foods increase the risk because heat and lipids act as solvents, allowing chemicals from newspaper ink to migrate into the food.

What are the health risks of newspaper ink in food?

Chronic exposure to lead and other heavy metals from newspaper ink can cause systemic toxicity and affect the nervous system and kidney function. Some solvents and dyes may also act as carcinogens or endocrine disruptors.

What is Metformin used for?

Metformin is one of the most common medications and the first treatment prescribed following a Type 2 diabetes diagnosis.

How much can Metformin lower HbA1c?

Metformin generally lowers HbA1c levels by around 1 to 1.5 per cent, though results differ for each individual.

How does Metformin work?

Metformin lowers glucose production in the liver and improves the body's response to insulin, helping reduce blood sugar levels.

Daily UPSC Prelims MCQs - Science & Tech. - 17th June 2026

Jigyashu Mishra
4 days ago
1 min read

Test your UPSC CSE 2027 preparation with today’s Science & Technology (Every wednesday) Quiz — covering spectrograph, Mars Atmosphere and Volatile Evolution (MAVEN), Metformin and more.

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