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WorksheetsEasy Round
Total questions: 10
Worksheet time: 8mins
The Nobel Prize is any of the six international prizes awarded annually for outstanding work in physics, chemistry, physiology/medicine, literature, economics, and the promotion of peace. Who were awarded the 2021 Nobel Prize in Chemistry for developing an ingenious tool for building molecules?
a. Syukuro Manabe & Klaus Hasselmann
b. Benjamin List & David MacMillan
c. David Julius & Ardem Patapoutian
d. Dmitry Muratov & Maria Ressa
Consider the chemical reaction in which carbon (C) reacts with oxygen gas (O2) to produce carbon dioxide (CO2). What mass of carbon dioxide would be produced if 24 grams of carbon reacted completely with 64 grams of oxygen?
(a)
When a color blind man marries a woman pure for normal color vision, it is probable that one of the following situations may result. It is probable that ____________.
a. all the children will be color blind
b. all the grandchildren will be color blind
c. only the sons will be colorblind
d. half the grandsons will be color blind
Two matters have specific heat capacities c and 2c. If we give Q and 4Q heat to these matters, changes in the temperatures of them become equal. If the matter A has mass m, find the mass of matter B in terms of m.
(a)
If the distance between two objects, each of mass 'M', is tripled, the force of attraction between the two objects is _____.
a. 1/2 the original force
b. 1/3 the original force
c. 1/9 the original force
d. unchanged
The Mars Science Laboratory, a part of NASA's Mars Exploration Program which is a long-term effort of robotic exploration of the red planet, launched a mission to determine the planet's "habitability." What is the name of the recent NASA rover sent there to assess whether Mars ever had an environment able to support small life forms?
(a)
Imagine that a 20 mile diameter hole is bored along the diameter of the Earth extending from the North Pole to the South Pole, that all air and gases are pumped out of this hole, and that the temperature throughout this hole is maintained at 300 Kelvins. A boy throws a ping pong ball into this hole. The ping pong ball would _______.
a. fall to the center of the Earth and remain forever suspended there.
b. fall to the opposite side of the Earth's surface and remain forever suspended there.
c. forever oscillate in simple harmonic motion along the hole between the loci of the hole with the opposite surfaces of the Earth.
d. none of these
An ionic bond would form between which pairs of elements?
a. atomic number 3 and atomin number 4
b. atomic number 7 and atomic number 8
c. atomic number 4 and atomic number 18
d. atomic number 8 and atomic number 12
Recent vaccination initiatives are aimed at building herd immunity against COVID-19 disease. Various vaccines have been administered worldwide. Which of the following COVID-19 vaccines is a nucleoside modified mRNA?
a. Ad26.COV2.S (Janssen–Cilag International NV)
b. BNT162b2 (Pfizer, BioNTech Manufacturing)
c. Coronavac (Sinovac Life Sciences Co., Ltd)
d. AZD1222 Vaxzevria (AstraZeneca)
Two coal trains, one southbound, the other westbound, reach an over and under crossing at the same instant and each proceed at 40 kilometers per hour on their respective courses. Approximately how far apart are the lead cars two hours later, to the nearest kilometer?
(a)
