Subjectwise MCQ
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Govt. Examwise MCQ
315 Science MCQ Questions in english हिन्दी
Read science multiple choice questions for the various types of competitive exams. These science questions will help students to prepare for their exams. Improve your Science subject knowledge by reading these science questions.
Which of the following is a secondary cell (rechargeable battery)?
Lead-acid batteries can be recharged multiple times (used in vehicles).
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Why does the sky appear blue?
Rayleigh scattering causes blue light to scatter more than other wavelengths.
Which acid is found in the human stomach?
HCl helps in digestion and kills harmful microbes.
Which bacteria play a key role in nitrogen fixation?
Rhizobium lives in the root nodules of legume plants.
. What is the effect when a wire heats up due to electric current?
This is the heating effect of electric current.
Which is the thickest layer of Earth?
The mantle is about 2900 km thick — the thickest layer.
Why does refraction of light occur when it passes from air to water?
Refraction occurs because light slows down in denser medium like water.
Which gland is known as the “Master Gland”?
The pituitary gland regulates most hormonal functions.
The SI unit “Hertz” (Hz) is used to measure —
1 Hz = 1 cycle per second, used for wave frequency.
What is the structural model of DNA called?
The Double Helix model was proposed by Watson and Crick.
Why can light not escape a black hole?
Black holes have such intense gravity that not even light can escape.
Which element is not naturally radioactive?
Although Bismuth is very slightly radioactive, it's considered effectively stable in nature.
Which colour has the shortest wavelength?
: Violet has the shortest wavelength in visible light.
Which device converts electrical energy into mechanical energy?
: An electric motor uses electricity to create motion.
What type of mirror is used in a rearview mirror of vehicles?
Convex mirrors provide a wider field of view.
Find the odd one out: Apple, Banana, Carrot, Orange.
Apple, Banana, and Orange are fruits; Carrot is a vegetable.
Doctor : Hospital :: Teacher : ?
A doctor works in a hospital; a teacher works in a school.
Which institution in Nagaland offers veterinary science research?
Located in Jalukie, it focuses on animal health and research.
When was the National Institute of Technology Nagaland established?
NIT Nagaland has been advancing technological innovation since 2010.
Which engineering college in Nagaland promotes technological research?
NIT Nagaland, established in 2010, focuses on engineering and technology research.
Which central university in Nagaland supports scientific research?
Nagaland University, established in 1994, is a hub for scientific studies in the region.
When was the National Research Centre on Mithun established?
Established in 1988, NRCM advances scientific research on Mithun.
Which institution in Nagaland conducts research on Mithun?
Located in Dimapur, NRCM focuses on Mithun breeding and genetics.
Which agricultural practice in Nagaland is studied for sustainable land use?
Mixed cropping is researched for its sustainability in Nagaland’s traditional farming systems.
What is the primary source of organic matter in Nagaland’s soil?
Forest-derived organic matter enriches Nagaland’s soil, aiding agricultural studies.
Which spice from Nagaland is researched for its medicinal properties?
The Naga King Chilli (Bhut Jolokia) is studied for its capsaicin content and health benefits.
What type of irrigation is being promoted in Nagaland to improve agricultural yield?
Drip irrigation is studied for its efficiency in Nagaland’s hilly agriculture.
Which indigenous crop in Nagaland is studied for its drought resistance?
Millets are studied for their resilience in Nagaland’s variable climate.
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