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Q.45 A ball dropped from a bridge hits the surface of the water in 3 𝑠. The height ofthe bridge, ignoring air resistance, is __________ 𝑚 (rounded off to onedecimal […]

Q.44 The wavelength of visible light for the green color is 600 𝑛𝑚. The energy ofphotons of this color is __________ 𝑒𝑉 (rounded off to one decimal place).(Planck’s constant = […]

Q.43 One molecule of the protein myoglobin contains one atom of iron. A myoglobinsample was found to contain 0.34% iron. The molecular weight of myoglobinis __________ 𝑔 𝑚𝑜𝑙−1 (rounded off […]

Q.42 A cylinder contains 50 𝐿 of an ideal gas at a pressure of 50 𝑎𝑡𝑚. Assuming thatthe temperature remains unchanged, the volume of the gas at 1 𝑎𝑡𝑚is __________ […]

Q.41 A wooden plant accumulates 10 𝑚𝑔 𝑘𝑔−1 of 14C during its life span. A fossil ofthis plant was discovered and contains 2.5 𝑚𝑔 𝑘𝑔−1 of 14C. The age of […]

Q.40 Which of the following is/are true about Retrovirus?(A) It contains double–stranded RNA genome(B) It can cause cancer(C) It contains reverse transcriptase(D) It contains double–stranded DNA genome Retroviruses are RNA […]

Q.39 Which of the following is/are trace element(s)?(A) Mn(B) P(C) S(D) Zn Mn and Zn are trace elements (micronutrients) required by plants in very small amounts, while P and S […]

Q.38 Which of the following entity(ies) is/are found inside the intact nucleus ofeukaryotic cells?(A) Centrosome(B) Lysosome(C) Nucleolus(D) Nucleosome Correct Answer: (C) and (D) The intact nucleus of eukaryotic cells contains […]

Q.37 Which of the following technique(s) can be used to determine the three–dimensional structure of an organic compound?(A) Mass spectrometry(B) NMR spectroscopy(C) UV–visible spectroscopy(D) X–ray crystallography Correct Answer: (B) NMR […]

Q.36 Which of the following statement(s) about the effect of genetic drift is/arecorrect?(A) It can cause changes in the frequency of alleles at random(B) It is a mechanism of evolution(C) […]