All questions
- Zr(Z=40) and Hf(Z=72) have similar atomic and ionic radii because of : (1) having similar chemical properties (2) belogning to same group (4) lanthanoid contraction ::From IV A to II B Due to lanthanoid contration size of 4d & 5d series elements of same group are approx same. 1
- Identify the compound that will react with Hinsberg's reagent to give a solid which dissolves in alkali Correct option is 4) 1º amine reacts with hinsberg reagent to give ppt. that is soluble in alkali. CH3–CH2–NH2 https://lh3.googleusercontent... 1
- The RBC deficiency is deficiency disease of: (1) Vitamin B2 (2) Vitamin B12 (3) Vitamin B6 (4) Vitamin B1 Correct option is 2) Vitamin B12 2
- Which one of the following polymers is prepared by addition polymerisation? (1) Dacron (2) Teflon (3) Nylon-66 (4) Novolac Teflon:: Correct Answer is 2) Teflon 2
- Match List - I with List - II. List-I List-II (a) PCl5 (i) Square pyramidal (b) SF6 (ii) Trigonal planar (c) BrF5 (iii) Octahedral option 1 is correct (1) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii) 1
- The compound which shows metamerism is : (1) C5H12 (2) C3H8O (3) C3H6O (4) C4H10O Correct option is (4) C₄H₁₀O This molecular formula is applicable for homologous series ether (–O–) a bivalent functional group and as we kn... 1
- The right option for the statement. “Tyndall effect is exhibited by”. is: (1) Urea solution (2) NaCl solution (3) Glucose solution (4) Starch solution (4) Starch solution Tyndall effect shown by starch solution 2
- Which of the following reactions is the metal displacement reaction ? Choose the right option Correct option is 3) Cr₂O₃+2Al→ Al₂O₃+2Cr 1
- A particular station of All India Radio, New Delhi, broadcasts on a frequency of 1.368 kHz (kilohertz). (2) 219.3 m Explaination::::: ν=C/λ λ=C/ν λ=3× 10⁸/1368×10³ λ = 219.29 1
- The molar conductance of NaCl, HCl and CH3COONa at infinite dilution are 126.45, 426.16 and 91.0 S cm2 mol–1 respectively. (3) 390.71 S cm² mol^(–1) 1
- The major product of the following chemical reaction is : CH3 CH3 CH – CH = CH2 + HBr (C6H5CO)2O2 ? (1) CH3 CH3 CBr – C (2) CH3 CH3 CH – CH2 – CH2 –Br Peroxide effect, major product according to anti markovnikov's rule (based on stability of free radical inter... 2
- BF3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are : (4) sp2 and 6 1
- The maximum temperature that can be achieved is blast furnace i s : (3) upto 2200 K 2
- Tritium, a radioactive isotope of hydrogen, emits which of the following particles Correct answer is 1) Beta Tritium is radioactive and emits low energy β⁻ particles (₋₁eº). 1
- Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is : (1) Beryllium chloride (1) Beryllium chloride Explaination:: 1
- The correct option for the number of body centred unit cells in all 14 types of Bravais lattice unit cells is: (1) 3 (2) 7 (3) 5 (4) 2 (1) 3 Explaination:: 1
- Which one among the following is the correct option for right relationship between CP and CV for one mole of ideal gas? (3) C_P – C_v = R 2
- Statement-I : Acid strength increases in the order given as HF << HCl << HBr << Hl. Statement II : (2) Both Statement I and Statement II are true. Explaination::: In hydra acids acidic strength increases an moving down the group as acid ea... 1
- Given below are two statements: Statement I: Aspirin and Paracetamol belong to the class of narcotic analgesics. (3) Both Statmenet I and Statement II are false. 2
- The incorrect statement among the following is : (1) Actinoids are highly reactive metals, especially when finely divided. (3) Most of the trivalent Lanthanoid ions are colorless in the solid state . 1
- GENERAL INTERVIEW QUESTIONS ON PERSONAL , EDUCATION and PROFESSIONAL GENERAL GENERAL INTERVIEW QUESTIONS ON PERSONAL Tell me about yourself. How would you describe yourself? How would a good friend describe you? How w... 1
- Imagine that you have to conduct an interview of a distinguished personality in the field of your own choice. Name of theInterviewee (Distinguished Personality) Amit Bhadana Area of Success/Reputation Youtuber Date/Venue/Time 30 July 2021, Yotube Fan... 1
- The famous botanical garden ‘Kew’ is located in__________ (a) New Zealand (b) Lucknow (c) Berlin (d) England (d) England is the correct option 1
- Which of the following is self conscious? (a) human being (b) salamander (c) Earthworm (d) None of these (a) human being 2