Row_ID
int64
1
30.2M
Topic
stringclasses
3 values
Subtopic
stringclasses
4 values
Question
stringclasses
13 values
Answer_1
stringclasses
11 values
Explanation_1
stringclasses
12 values
Answer_2
stringclasses
11 values
Explanation_2
stringclasses
11 values
Answer_3
stringclasses
0 values
Explanation_3
stringclasses
0 values
Difficulty
stringclasses
2 values
401
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
402
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
403
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
404
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
405
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
406
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
407
Organic Chemistry
Alkenes
HBr+1-butene product?
2-bromobutane
HBr adds; yields 2-bromobutane.
sec-butyl bromide
Same: sec-butyl bromide.
null
null
Hard
408
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
409
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
410
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
411
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
412
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
413
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
414
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
415
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
416
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
417
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
418
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
419
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
420
Organic Chemistry
Alkenes
HCl+2-methylpropene product?
2-chloro-2-methylpropane
HCl adds; yields 2-chloro-2-methylpropane.
tert-butyl chloride
Same: tert-butyl chloride.
null
null
Hard
421
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
422
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
423
Organic Chemistry
Alkenes
HCl+2-methylpropene product?
2-chloro-2-methylpropane
HCl adds; yields 2-chloro-2-methylpropane.
tert-butyl chloride
Same: tert-butyl chloride.
null
null
Hard
424
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
425
Organic Chemistry
Alkenes
HBr+2-methylpropene product?
unknown
HBr adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
426
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
427
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
428
Organic Chemistry
Alkenes
HCl+1-methylcyclohexene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
429
Organic Chemistry
Alkenes
HCl+1-butene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
430
Organic Chemistry
Alkenes
HBr+1-butene product?
2-bromobutane
HBr adds; yields 2-bromobutane.
sec-butyl bromide
Same: sec-butyl bromide.
null
null
Hard
431
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
432
Organic Chemistry
Alkenes
HBr+1-butene product?
2-bromobutane
HBr adds; yields 2-bromobutane.
sec-butyl bromide
Same: sec-butyl bromide.
null
null
Hard
433
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
434
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
435
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
436
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
437
Organic Chemistry
Alkenes
HCl+1-methylcyclohexene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
438
Organic Chemistry
Alkenes
HCl+1-methylcyclohexene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
439
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
440
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
441
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
442
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
443
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
444
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
445
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
446
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
447
Physical Chemistry
Kinetics
t1/2,k=0.01s^-1?
69.3s
t1/2=0.693/0.01=69.3s.
~70s
t1/2β‰ˆ0.7/0.01=70s.
null
null
Hard
448
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
449
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
450
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
451
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
452
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
453
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
454
Physical Chemistry
Kinetics
t1/2,k=0.01s^-1?
69.3s
t1/2=0.693/0.01=69.3s.
~70s
t1/2β‰ˆ0.7/0.01=70s.
null
null
Hard
455
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
456
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
457
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
458
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
459
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
460
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
461
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
462
Organic Chemistry
Alkenes
HCl+1-butene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
463
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
464
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
465
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
466
Organic Chemistry
Alkenes
HBr+1-butene product?
2-bromobutane
HBr adds; yields 2-bromobutane.
sec-butyl bromide
Same: sec-butyl bromide.
null
null
Hard
467
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
468
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
469
Organic Chemistry
Alkenes
HBr+2-methylpropene product?
unknown
HBr adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
470
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
471
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
472
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
473
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
474
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
475
Organic Chemistry
Alkenes
HCl+2-methylpropene product?
2-chloro-2-methylpropane
HCl adds; yields 2-chloro-2-methylpropane.
tert-butyl chloride
Same: tert-butyl chloride.
null
null
Hard
476
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
477
Organic Chemistry
Alkenes
HCl+1-butene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
478
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
479
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
480
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
481
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
482
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
483
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
484
Organic Chemistry
Alkenes
HBr+2-methylpropene product?
unknown
HBr adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
485
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
486
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
487
Organic Chemistry
Alkenes
HCl+1-methylcyclohexene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
488
Inorganic Chemistry
Oxidation States
Fe ox.state in [Fe(CN)6]4-?
+2
[Fe(CN)6]4-: Fe=+2.
Fe(II)
+2=II.
null
null
Expert
489
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
490
Physical Chemistry
Kinetics
t1/2,k=0.01s^-1?
69.3s
t1/2=0.693/0.01=69.3s.
~70s
t1/2β‰ˆ0.7/0.01=70s.
null
null
Hard
491
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
492
Organic Chemistry
Nomenclature
Name CH3CH(OH)CH2CHO?
3-hydroxybutanal
CH3CH(OH)CH2CHO: 3-hydroxybutanal.
beta-hydroxybutyraldehyde
3-hydroxybutanal=beta-hydroxybutyraldehyde.
null
null
Hard
493
Physical Chemistry
Kinetics
t1/2,k=0.02s^-1?
34.6s
t1/2=0.693/0.02=34.6s.
~35s
t1/2β‰ˆ0.7/0.02=35s.
null
null
Hard
494
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
495
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
496
Inorganic Chemistry
Oxidation States
Co ox.state in [Co(NH3)6]3+?
+3
[Co(NH3)6]3+: Co=+3.
Co(III)
+3=III.
null
null
Expert
497
Physical Chemistry
Kinetics
t1/2,k=0.1s^-1?
6.9s
t1/2=0.693/0.1=6.9s.
~7s
t1/2β‰ˆ0.7/0.1=7s.
null
null
Hard
498
Organic Chemistry
Alkenes
HCl+1-methylcyclohexene product?
unknown
HCl adds; yields unknown.
unknown
Same: unknown.
null
null
Hard
499
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard
500
Physical Chemistry
Kinetics
t1/2,k=0.05s^-1?
13.9s
t1/2=0.693/0.05=13.9s.
~14s
t1/2β‰ˆ0.7/0.05=14s.
null
null
Hard