Alcohols, Phenols & Ethers

Test series for NEET 

1. Alcohols, phenols & Ethers

solid State (MCQ's)

    1. Which of the following is not feature of Crystalline solids?

A. Have sharp M.pt

B. Have anisotropic nature

C. Show isotropy

D. Have a long-range orderly arrangement

2. The Percentage of free space per unit cell in Primitive, FCC & BCC respectively is

A. 47.6%, 32% & 26%

B. 47.6%, 28%, 32%

C. 47.6%, 26% & 32%

D. NOTA

3. Edge length ratio of BCC to FCC is ------

4. Which of the following is correct about Orthogonal Crystal ?

A. Has 4 Bravais lattices

B. BaSO4, KNo3, K2SO4

C. α=β=γ=90^O

D. All of the above

5. Coordination Number of NaCl, CsCl, ZnS, CaF2, Na2O are

A. 6:6, 8:8, 4:4, 8:4, 4:8

B. 6:6, 8:8, 4:4, 8:8, 4:4

C. Reverse of Option A

D. Reverse of Option B

6. Which of the following is correct about Voids size :-

A. Oct. Void = 0.414 X r

B. 0.225 X r = Tet. Void

C. Tri. Void= 0.115 X r

D. All of the above

7. The percentage efficiency of 2D- SCP & HCP is :-

A 52.4%, 74%              B. 47.6 % & 36 %

C. 47.6 % & 26%         D. 52.4% & 60.4%

8. What of the following is incorrect about some of ionic crystals

A. NaCl has 4:4 Coordination number

B. Flourite structure(CaF2, BaCl2, SrF2) has 8:4 Coordination number

c. Antiflourite ( Na2O, Li2O) has 4:8 Coordination number

D. Spinel has a Bivalent & Trivalent cation , Bivalent occupies 1/8 th tet. Voids while Oxide ions Occupies CCp . Trivalent occupies ½ of Oct. Voids. Ex ZnFe2O4

9.Which  of the following is not a spinel

A. MgFe2O4

B. ZnFe2O4

C. AlFe2O4

D. NaFe2O4

10. Schottky defect is characterized  by

A. Equal number of cation &  anion loss

B. Occurs in ionic compounds with Higher C.No. & having size of ions almost equal

C. Decreases the density of crystal

D. A type of vacancy defect that occurs In NaCl, CsCl, KCl , KBr & AgBr etc

E. All of the above

11. Greater the F-Centres, ----will be the intensity of Colour

A. Greater

B. Lesser

C. Can’t be predicted

D. Nothing to do with colour intensity

12. The Crystal that exhibit both Schottky & Frenkel defect

A. AgBr             B. AgCl

C. AgI                D. CsCl

13. superconductivity is all about :-

A. When substances offers zero resistance

B. Kammerlingh Onnes observed this phenomenon at 4K in Hg.

C. YBa2Cu3O7, Nb3Ge alloy, La1.25Ba0.15CuO4, (TMTSF)2 PF6 ( Tetra methyl tetra selena fulvalene )

Exhibit superconductivity 

D. All of the above

14. Solids that have net zero magnetic moment:-

A. Diamagnetic & antiferromagnetic substances

B. Paramagnetic & Ferromagnetic substances

C. Ferrimagnetic & Antiferromagnetic substances

D. Only Diamagnetic substances

15. The ferro, ferri & anti-ferro magnetic substances changes into Paramagnetic solids at a particular temperature called as Curie temperature, this is because of alignment of spins in one direction .Fe3O4( Ferrimagnetic) gets converted to paramagnetic at

A. 850K       B. 890 K     C. 900K       D. NOTA

16. Bethollides are :-

A. Non-stoichimetric solids having metal deficiency defect like Ni0.98 O

B. Stoichimetric solids with no defect

C. Solids that acts like pseudo gold

D. NOTA

 

17.  A unit cell of NaCl has four formula units. The edge length of the unit cell is 0.564 nm . What is the density of NaCl

A. 2.16 g/ml                   B. 2.16 kg/l  

C. 2.16 kg/ml                 D. NOTA

18. The diffraction of Barium with X-radiation of wavelength 2.29 A⁰ gives a first order reflection at 30^o. What is the distance between diffracted planes

A. 2.29 A⁰       B) 1.29A⁰       C) 4.19 A⁰      D) NOTA

19. A metal crystallizes into two cubic phases FCC & BCC whose unit cell lengths are 3.5 & 3 A^O respectively. Calculate the ratio of densities of FCC & BCC

A. 1.259/1   B. 1.315/2   C. 1.315/1   D. 1.328/2

20. Inverse spinel structure are

A. Just opposite in occupancy wrt normal spinel

B. have M2+ ions occupy at Oct. Voids while M3+ equally occupy Tet. & Oct. voids

C. Fe3O4 is inverse spinel

D. All of the above

21. The edge length of BCC unit cell is 390pm . If the cation radius is 150pm then the radius of anion is

A. 187.7 pm   B. 197.7 Pm   C. 170.9 pm D. 1.84.7 pm

22. The effective radius of an iron atom is 1.42 A⁰. It has a rock salt structure. calculate its density ( Fe=56)

A. 5.8g/ml      B. 6.8g/ml     C. 7.8g/ml   D. 4.8g/ml

23. A close packing structure of uniform spheres has the cell edge = 0.8 mm. Find the radius of molecules of it has A) SCC lattice B) FCC lattice & C) BCC lattice respt.

A. 0.4 mm, 0.2828mm &  0.3464mm

B. 0.4mm, 0.4364mm, 0.2828mm

C. 0.44mm, 0.2626mm, 0.3434mm

D. NOTA

24. The most unstable & unsymmetrical crystal system is

A. orthorhombic crystal

B. Triclinic crystal

C. Monoclinic crystal

D. NOTA

25. The most stable & symmetrical crystal system is

A. triclinic                       B. Cubic

C. Orthorhombic           D. Hexagonal

 

26. Intrinsic semiconductors are :-

A. Pure Ge & Si

B. P & n- type Semi conductors

C. Both A & B                 D. NOTA

27. n-type SC is observed when

A. When P is doped in Si

B. When Al is doped in Si

C. When both P & Al are doped in Si & Ge

D. NOTA

28. CCP has ---fold symmetry & HCP has ---fold of symmetry  

A. plane of Symmetry

B. 2 fold symmetry & 3 fold symmetry

C. 3 fold symmetry  &  6 fold symmetry

D. NOTA

29. The Coordination number & Packing efficiency of HCP( ABAB…type ) & CCP( ABCABC..) type of 3D crystal

A. 12 & 74 %                   B. 6 & 60.4%

C. 12 & 60.4%                 D NOTA

30. Radius ratio is ratio of radius of

A. cation to anion ‘

B. anion to cation

C. radius of both to cation

D. radius of any to sum of both

31.  The contribution of an atom per unit cell A) at corner of Hexagonal & B) Side of hexagonal is respt.

A. 1/6 & ½                    B. ½& 1/6

C. ¼ & 1                         D. 1/6 & 1/6

32. In a closed packed array of N spheres , the number of tetrahedral holes are

A. N        B. 2N         C. N/2       D. N/4

33. In a solid AB having NaCl structre, A atoms occupy the corners of the cubic unit cell. If all the face centered atoms along one of the axes are removed , then the resultant formula is

A. A3B4    B. A3B2    C. A3B3   D. A3B5

34. The Bragg’s equation is mathematically

A. nλ = 2dSinφ

B. nλ= dsin O

C. nλ= 2dtan φ

D. E= hv

 

 

 

 

 

 

 

 

 

 

 

 

 

Geochemist2021 Paper 1 (Memory Based)

#Geochemist 2021 held  Feb. 2021. 

Paper 1 

1. National Youth Parliament Festival age group 18 to 25 years 

2. Mafluzat literature ?? 

3. Montreal protocol retifies reduction of cfc's

4. Art. 243D Reservation of seats -SC,ST 

5. Very strong Air currents in Upper air westerly are known as Jet Streams 

6. Lahore session 1929 famous for Purna  Sawaraj 

7. Who appoints Attorney General for State President of India 

8. Tendons connects Muscle to Bone 

9. Decade of 2021-30 is declared by UN as 

10. CMD of Serum Institute of India private limited Cyrus S. Poonawalla 

11. Ayushman Bharat ....(Try Yourself) 

12. Zaffron is cultivated on which type of soil Karewas 

13. Inaugural edition of Sea Vigil Year January 2019

14. Classical example of entrepot ?? 

15. Self respect movement started by Ramaswamy (K/a Periyar by His followers) 

16. Kayakalp  awards given annually by ministry of Ministry of Health & Family welfare  launched in May 2015 

17. Which committee on PRI recommend a 2 Tier  system by removing  block level bodies ...(Try Yourself) 

18. James Prinsep  famous for Deciphering Historical seals 

19. Tamilakam consists of TN, Kerala , Puducherry , Lakshwadeep  & AP & Karnataka 

20. Headquarters of East Central Railways of India Hajipur 

21. Mango shower Kerala , karnataka,  Korean, Goa 

22. PM SYM (Try urself )

23. Ozone Hole (Try urself)

24. Pulikulam  is an indigenous bread of Bulls used in Jallikattu 

25. Headquarters of Coal India limited (CIL)  a Maharatna Kolkata 

26. Tincture of Iodine is 2-7%  of Elemental iodine dissolved in Ethanol & water 

27. Marajo Island is located in Brazil 🇧🇷

28. India First pollinators parks Haldwani Uttarakhand 

29. Ultrasonic wave frequency 2OK Hertz above 

30. Web Ratna Awards old name Digital India Awards.....awarded by MeitY

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