MCQ
Science and Pedagogy MCQ - Practice Questions with Answers
Solve 143 Science and Pedagogy questions for RAS/RPSC preparation.
Practice questions
Q1In amphibians, cells that form the neural tube come from the
During neurulation, the notochord induces the overlying ectoderm to form the neural plate, which folds into the neural tube. Thus the cells forming the neural tube are ectodermal in origin. Therefore option A is correct.
Q2Nitrogen product produced by the reaction of sodium nitrite and ammonium chloride in aqueous solution is
In aqueous solution, sodium nitrite reacts with ammonium chloride to form nitrogen gas, sodium chloride and water. The balanced reaction is NH4Cl + NaNO2 -> N2 + NaCl + 2H2O. Therefore the nitrogen product is nitrogen gas, so C is correct.
Q3In Science Olympiad, Vivek scored 80 marks. He applied for second attempt after a week. In second attempt also he scored 80 marks. This characteristic of test is known as -
Reliability of a test means that its scores remain consistent across different occasions of testing. Vivek scored 80 marks in the first attempt and again scored 80 marks after one week, so the test shows stable results on repeated administration. Therefore, the correct answer is C.
Q4The gametophytic, non vascular, seedless plants which lack complex tissue organization having alternation of generation are -
Mosses are bryophytes. Bryophytes have a dominant gametophyte, lack true vascular tissue and seeds, and reproduce through spores with alternation between gametophyte and sporophyte phases. Ferns are vascular pteridophytes, so the description fits moss; A is correct.
Q5Buckminster fullerene contains following numbers of five and six membered rings respectively :
Buckminsterfullerene, C60, has a truncated-icosahedron or soccer-ball structure. Its carbon cage contains 12 five-membered rings and 20 six-membered rings. Since the question asks these numbers respectively, option B is correct.
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6A particle of mass m1 moving with u1 velocity collide with another particle of mass m2 which is initially in rest. If collision is perfectly inelastic then the fractional loss in the kinetic energy is
7The term used for any asexual method of propagation not involving the normal production of embryos by fertilization is
8An ideal black body emits maximum intensity of radiation of wavelength 500 nm at temperature 1227°C. If its temperature is increased by 10^3°C then the maximum emission wavelength will be
9The average energy released by the fission process is 200 MeV. If the reactor is working at a power level of 8 MW continuously, then the number of fissions per second will be -
10The highest level behaviour in Psychomotor domain is
11The hormone which occurs naturally in plant tissues and is commonly known as stress hormone is :
12Amplitude of a damped oscillator becomes half in 2s. The amplitude after 8s of start of oscillation will be
13If the wavelength of the light absorbed by [Co(NH₃)₅(H₂O)]³⁺ complex be 500 nm, the color of this complex shall appear to be
14Which of the following hormone is produced only from adrenal cortex ?
15A uniform rope of length 10 m and mass 15 kg hangs vertically from a rigid support. A block of mass 5 kg is attached to the free end of the rope. If a transverse pulse of wavelength 0.04 m is produced at the lower end of the rope, the wavelength of the pulse when it reaches the top of the rope will be