The exam pattern of the science Olympiad is different and contains complex questions that make the student think out of the box. National Science Olympiad for class 12 is a school-level competitive exam held by the Science Olympiad foundation. This Olympiad aims to provide advanced knowledge about the science stream.
These are the chapters covered in most of the Science Olympiad Exams.
Free Sample Questions for
Question 1
The endoplasmic reticulum functions to
A. transport materials.
B. destroy old cell parts.
C. make ribosomes.
D. make proteins and lipids.
Question 2
Which compound is formed when vapors of phenol are passed over heated zinc?
A. Benzene
B. Toluene
C. Naphthalene
D. Aniline
Question 3
Which enzyme could be used to join two DNA fragments?
A. DNA ligase
B. DNA polymerase
C. DNA recombinase
D. DNA endonuclease
Question 4
Which scenario is an example of a negative feedback response?
A. a mouse running away from a predator
B. a baby shivering because it is cold
C. a plant bending toward a light source
D. a flower growing in a nutrient-rich soil
Question 5
Which of the following must react with an alkyne to generate a cis alkene?
A. lithium
B. ammonia
C. a Lindlar catalyst
D. bromine
Question 6
Imagine that, in a closed system, there is an input of 1 kJ of light. The light energy is converted into glucose, then ATP, then into mechanical energy. Which statement about the amount of mechanical energy available is true?
A. There is 1 kJ of mechanical energy available to do work.
B. Entropy increases with each conversion, so less than 1 kJ is available.
C. All the reactions involved are anabolic, so there is only 0.25 kJ of energy available.
D. All the reactions are endergonic, so no mechanical energy is produced.
Question 7
What causes striations on skeletal muscles?
A. epimysium
B. myofibrils
C. myofilaments
D. aponeurosis
Question 8
What task of DNA recombination does the technique of electroporation complete?
A. It separates proteins based on size.
B. It creates antisense DNA.
C. It measures the expression level of a gene.
D. It inserts the DNA into the host cell.
Question 9
Based on the unbalanced reaction below,CrO_4^[2-] (aq) rarr Cr(OH)_4^[-] (aq) Chromium undergoes which of the following processes?
A. an oxidation
B. a redox reaction
C. a reduction
D. an electron transfer equation
Question 10
Chemical bonds formed when electrons move freely from one atom to another are
A. ionic.
B. covalent.
C. metallic.
D. van der Waals.