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5166 problems
Exam:
Type:
1.
A glass prism has an angle of 60° and a refractive index of 1.50… New
High School (11–12) · Experimental SkillsJEE MainA-LevelIB+22A-LevelIBStemPy LabStemPy Lab
Hard
2.
A student prepares iodoform from 2.90 g of propanone (58 g/mol) using iodine, 38.1 g (254 g/mol)… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
3.
A market stall records the number of minutes that its customers spend at the stall… New
High School (9–10) · StatisticsOlympiadAEEE (Amrita)AMUEEE+21OlympiadStemPy LabStemPy Lab
Advanced
4.
Name the animal, the cockroach, the earthworm or the frog, for each description… New
High School (11–12) · Structural Organisation in AnimalsA-LevelIBAP EAPCET+12A-LevelIBStemPy LabStemPy Lab
Medium
5.
A fit with curve_fit gives an amplitude of 0.80 m…
High School (11–12), High School (9–10), Undergraduate, General · Trigonometry and Waves by ComputerStemPy LabStemPy Lab
Medium
6.
Find the mean temperature of the first 10 days and of the last 10 days…
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode, Spread of Data, Probability and ChanceStemPy LabStemPy Lab
Hard
7.
A ray meets a glass slab of thickness 3.0 cm and refractive index 1.50 at an angle of incidence of… New
High School (11–12) · Experimental SkillsA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
8.
A student warms 4.65 g of aniline (93 g/mol) with 6.12 g of acetic anhydride (102 g/mol) and a… New
High School (11–12) · Principles Related to Practical ChemistryAEEE (Amrita)AMUEEEAP EAPCET+16StemPy LabStemPy Lab
Medium
9.
The marks of the candidates in a school test are grouped in the table below… New
High School (9–10) · StatisticsOlympiadAEEE (Amrita)AMUEEE+21OlympiadStemPy LabStemPy Lab
Hard
10.
A nymph is 3.0 mm long when it hatches. In a model, its length grows by a factor of 1.2 at every… New
High School (11–12) · Structural Organisation in AnimalsNEETA-LevelIB+15A-LevelIBStemPy LabStemPy Lab
Hard
11.
Dev records a 14 Hz hum at 20 readings each second…
High School (11–12), High School (9–10), Undergraduate, General · Trigonometry and Waves by ComputerStemPy LabStemPy Lab
Hard
12.
The 10 rainy days had a total of 285 °C, and the 20 dry days a total of 637 °C…
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode, Spread of Data, Probability and ChanceStemPy LabStemPy Lab
Hard
13.
On an optical bench, a bright object reads 26.4 cm from the lens and a sharp image on the screen… New
High School (11–12) · Experimental SkillsA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
14.
A student mixes 4.17 g of iron(II) sulphate heptahydrate, FeSO₄· 7H₂O (278 g/mol), with 1.98 g of… New
High School (11–12) · Principles Related to Practical ChemistryStemPy LabStemPy Lab
Easy
15.
The table shows the ages of 60 visitors to a library, in classes of width 10 years… New
High School (9–10) · StatisticsOlympiadAEEE (Amrita)AMUEEE+21OlympiadStemPy LabStemPy Lab
Hard
16.
A female cockroach makes 9 oothecae in her life… New
High School (11–12) · Structural Organisation in AnimalsNEETA-LevelIB+13A-LevelIBStemPy LabStemPy Lab
Medium
17.
A vibration sensor reads every 0.01 s for 2.0 s, which is 200 readings…
High School (11–12), High School (9–10), Undergraduate, General · Trigonometry and Waves by ComputerStemPy LabStemPy Lab
Medium
18.
The chance of a rainy day is 1/3. If the days did not affect each other, what would be the chance…
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode, Spread of Data, Probability and ChanceStemPy LabStemPy Lab
Hard
19.
The forward characteristic of a silicon diode is nearly a straight line above 0.7 V… New
High School (11–12) · Experimental SkillsJEE MainA-LevelIB+22A-LevelIBStemPy LabStemPy Lab
Hard
20.
A sample of hydrated oxalic acid, H₂C₂O₄· xH₂O, has a mass of 0.630 g… New
High School (11–12) · Principles Related to Practical ChemistryJEE MainJEE AdvancedAEEE (Amrita)+22StemPy LabStemPy Lab
Hard
21.
The table shows the marks of 80 candidates in an exam… New
High School (9–10) · StatisticsOlympiadAEEE (Amrita)AMUEEE+21OlympiadStemPy LabStemPy Lab
Hard
22.
What is the brain of a cockroach called, and where is it? … New
High School (11–12) · Structural Organisation in AnimalsNEETA-LevelIB+13A-LevelIBStemPy LabStemPy Lab
Medium
23.
Two equal waves of amplitude 0.40 m run along a rope…
High School (11–12), High School (9–10), Undergraduate, General · Trigonometry and Waves by ComputerStemPy LabStemPy Lab
Easy
24.
Call a day "very hot" if its highest temperature is 34 °C or more…
Middle Stage (6–8), High School (9–10), High School (11–12), Undergraduate, General · Averages: Mean, Median and Mode, Spread of Data, Probability and ChanceStemPy LabStemPy Lab
Medium
25.
A galvanometer has a resistance of 100 Ω and shows full deflection for 2.0 mA… New
High School (11–12) · Experimental SkillsA-LevelIBAEEE (Amrita)+18A-LevelIBStemPy LabStemPy Lab
Medium
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