Reading Comprehension — MPSC PYQ
Every Reading Comprehension question MPSC has actually asked in Science & Technology, 2013–2023 — 11 questions, each with the correct answer from the official MPSC key and a full explanation. Newest papers first.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
The passage says a motor is a generator in reverse: 'a current supplied to the loop causes it to rotate'. The battery's job is to supply that current. Generating current by rotating a loop is what a generator does.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
With F = GmMe/R², a ball's acceleration is F/m = GMe/R², which does not depend on its mass. So the heavy and light balls fall with the same acceleration and reach the ground together.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
At height h the distance from Earth's centre is Re + h, so g = GMe/(Re + h)², which falls as you go higher.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
By Kepler's third law T² ∝ R³. Making the radius 4 times multiplies T² by 64, so the period becomes 8 times.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
The passage says 'the major portion present in sewage is water', which is why it can be used for irrigation. Organic matter and particulate matter are present but are not the major portion, so only (d).
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
The passage says sound waves, including ultrasonic waves, travel as longitudinal waves: the particles of the medium vibrate along the direction the wave moves.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
The passage defines heterosis (hybrid vigour) as the superiority of a hybrid over either of its parents in yield, growth or vigour.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
In bagging, the emasculated flowers' stigmas are covered with bags so that no unwanted pollen reaches them; they are later dusted with pollen from the chosen parent.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
The passage says reacting molecules absorb radiation of certain wavelengths 'in the uv-visible region', so visible and ultraviolet radiation.
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
Thermal reaction rates vary with temperature (a), and the number of activated molecules is proportional to light intensity (c). But only radiation of certain wavelengths is absorbed, so not 'any light' can control the rate (b).
या प्रश्नाचा पूर्ण मजकूर व पर्याय वरील प्रतिमेत आहेत. / The full question and options are in the image above.
Both are wrong. Biotechnology is basically the use of living organisms and biological processes to make products in agriculture, medicine and industry; patents only protect such inventions. And because it creates crops, medicines and industries, it has a great deal to do with economics.