CSIR HRDG UGC NET Chemical Science Question Paper Model National Eligibility Test : csirhrdg.res.in

Name of the Organization : Human Resource Development Group Council of Scientific & Industrial Research
Name of the Paper : CSIR-UGC National Eligibility Test
Name of Subject : Chemical Sciences
Part : B & C
Document Type : Model Question Paper
Location : Delhi
Website : csirhrdg.res.in

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/csirhrdg.res.in/7066-cs_mp.pdf

Chemical Sciences Sample Question :

This Test Booklet will contain 145 (20 Part `A?+50 Part `B+75 Part „C?) Multiple Choice Questions (MCQs). Candidates will be required to answer 15 in part „A?, 35 in Part „B? and 25 questions in Parts C respectively ( No. of question to attempt may vary from exam to exam).

Related : CSIR HRDG UGC NET General Science Question Paper Model National Eligibility Test : www.pdfquestion.in/7065.html

In case any candidate answers more than 15, 35 and 25 questions in Parts A, B and C respectively only first 15, 35 and 25 questions in Parts A, B and C respectively will be evaluated. Questions in Parts `A? and „B? carry two marks each and Part `C? questions carry four marks each. There will be negative marking @25% for each wrong answer. Below each question, four alternatives or responses are given. Only one of these alternatives is the „CORRECT? answer to the question.
Model Question Paper :
PART A :
May be viewed under heading “General Science”
PART B :
21. [CoCl4]2- shows a deep blue colour because of
1. metal to ligand charge transfer transition
2. ligand to metal charge transfer transition
3. spin allowed and Laporte forbidden d-d transition
4. spin allowed and Laporte allowed d-d transition

23. Choose the correct statement among the following
1. diamond has lower thermal and electrical conductivities compared to graphite
2. diamond has similar thermal and electrical conductivities compared to graphite
3. diamond has higher thermal conductivity but lower electrical conductivity compared to graphite
4. diamond has the same thermal but lower electrical conductivity compared to graphite

24. Which of the following is a nido-borane?
1. B4H10
2. B5H9
3. [B6H6]2-
4. B5H11

25. The oxidation number of sulphur in dithionite [S2O4]2- and dithionate [S2O6]2- are, respectively,
1. +3 and +4
2. +3 and +5
3. +4 and +5
4. +4 and +6

26. Among the three types of orbitals p, d, and f,
1. both p and f orbitals have centre of symmetry
2. both p and d orbitals have centre of symmetry
3. only d orbitals have centre of symmetry
4. f orbitals alone have centre of symmetry

27. The absorbance of solution having 20% transmittance is
1. 0.301
2. 0.699
3. 1.301
4. 1.699

28. The active site of enzyme nitrogenase contains
1. Mo
2. Mn
3. Fe
4. Cu

29. Which one of the following is a free radical:
1. CO
2. CN–
3. NO
4. CS

32. Choose the INCORRECT statement from the following
1. Fluorine has higher electronegativity than chlorine
2. Fluorine molecule (F2) has lower bond energy than chlorine molecule (Cl2)
3. Fluorine has higher electron affinity than chlorine
4. Fluorine has a lesser tendency to form cation than chlorine

33. The only molecule having bridging oxygen is
1. Phosphorus trioxide
2. Phosphorus pentaoxide
3. Cyclic tetraphosphate
4. Pyrophosphate

34. The coordination number of phosphorus in [PMo12O40]3- is
1. 2
2. 4
3. 5
4. 6

35. Using phenolphthalein as the indicator, which of the following titration is possible:
1. acetic acid with pyridine
2. oxalic acid with sodium hydroxide
3. hydrochloric acid with aniline
4. sulphuric acid with aqueous ammonia

36. Which of the following species is ESR-active?
1. VOSO4
2. K2Cr2O7
3. KMnO4
4. [Co(NH3)6]Cl3

37. Ozone (O3) absorbs UV radiation in the atmosphere and is decomposed mainly into
1. O2, O
2. O2-, O2+
3. O22-, O+
4. atomic oxygen

38. Large derivation from Trouton’s rule is observed for systems which are
1. having more ordered structure
2. having more disordered structure
3. having low melting points
4. having low boiling points

39. The concentration of a reactant decreases linearly with time. What is the order of the reaction?
1. 1st order
2. Fractional order
3. 2nd order
4. Zero order

40. The point group symmetry of the molecule cis–ML4 X2 is
1. C4v
2. D4h
3. C2h
4. C2v

41. The point group symmetries of a square and a rectangle respectively, are
1. D4h and D2h
2. C4h and C2h
3. D4h and C2h
4. C4h and D2h

42. The number of rotational degrees of freedom of CO2 is
1. one
2. two
3. three
4. four

43. The magnitude of the nuclear spin angular momentum of a nuclei is 15 /2 ? units. The value of I is
1. 5/2
2. 1/2
3. 1
4. 3/2

44. Identify the molecule whose rotational constant can not be determined by spectroscopic methods.
1. CH4
2. H2
3. CO2
4. HCl