Class 11 NSO Sample Papers are readily available for download. Please click the download icon below to view or download the Sample paper. These NSO Olympiad Sample Questions will be of the most use to you as you study.
Free PDF of NSO Sample Question for Class 11
National Science Olympiad – NSO Registration for Class 11
National Science Olympiad 2022-23 – Download free NSO Level 1 PDF Sample Papers for Class 11
Guidelines for the Candidate
1. You will get additional ten minutes to fill up information about yourself on the OMR Sheet, before the start of the exam.
2. Write your Name, School Code, Class, Roll No. and Mobile Number clearly on the OMR Sheet and do not forget to sign it. We will share your marks / result and other information related to Olympiad exams on your mobile number.
3. The Question Paper comprises sections: reasoning, subjective, achiever’s section
4. All questions are compulsory. There is no negative marking. Use of calculator is not permitted.
5. There is only ONE correct answer. Choose only ONE option for an answer.
6. To mark your choice of answers by darkening the circles on the OMR Sheet, use HB Pencil or Blue / Black ball point pen only
7. Rough work should be done in the blank space provided in this booklet.
8. Return the OMR Sheet to the invigilator at the end of the exam.
9. Please fill in your personal details in the space provided on this page before attempting the paper.
1. Osmosis is a special kind of diffusion, in which water diffuses across the cell membrane. The rate and direction of osmosis depend on both ______________.
- absorption and concentration gradient
- Pressure and concentration gradient
- Both (a) and (b)
- None of these
2. The major parts of the human neural system are depicted below. Fill in the boxes (P to U) with appropriate words.
1. P- PNS, Q- Spinal cord, R- Heteronatic Neural System, S- Forebrain, T- Hindbrain, U-Parasympathetic
2. P- PNS, Q- Spinal cord, R- Somatic Neural System, S- Forebrain, T- Hindbrain, U-sympathetic
3. P- PNS, Q- Spinal cord, R- Somatic Neural System, S- Forebrain, T- Hindbrain, U-Parasympathetic
4.None of these
3. Which of the following statements is INCORRECT?
1.The medullary zone of kidney is divided into a few conical masses called medullary pyramids projecting into the calyces.
2. Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis.
3. Glomerulus along with Bowman’s capsule is called the renal corpuscle.
4. Renal corpuscle, proximal convoluted tabule (PCT) and distal convoluted tubule (DCT) of the nephron are situated in the cortical region of kidney.
4. A student in class X was doing an experiment. He added calcium to the water. To his surprise, the calcium starts floating on top of the water.
His teacher explains to him the result he got.
Choose the explanation his teacher had given him.
- Bubbles of carbon dioxide stick to the surface of metal.
- Bubbles of hydrogen stick to the surface of metal.
- Calcium is lighter than water.
- None of the above.
5. Which one observation is correct according to effect of acid and base on some indicator?
| Test Sample | Red Litmus | Blue Litmus | phenolphthalein | Methyl Orange | |
| A | H2SO4 | No Effect | Turn Red | No Effect | Turn Red |
| B | KOH | No Effect | Turn Red | Turn Pink | Turn Red |
| C | NaOH | Turn Blue | No Effect | No Effect | No Effect |
| D | HNO3 | Turn Blue | No Effect | Turn Pink | Turn Red |
- A observation is correct.
- B observation is correct.
- C observation is correct.
- D observation is correct.
6. Members of phycomycetes are found in:
- Aquatic habitats
- On decaying wood
- Moist and damp places
- As obligate parasites on plants
Choose from the following options
- Only i
- i and iv
- ii and iii
- All of the above
7. Hormones are called chemical signals that stimulate specific target tissues. Their action depends on the presence of receptors on the respective target tissues. Which of the following is the correct location of the receptors in the case of protein hormones?
- Extra cellular matrix
- Blood
- Plasma membrane
- Nucleus
8. Match the enzyme with their respective substrate and choose the right one among options given.
Column I Column II
A. Lipase i. Carbohydrates
B. Nuclease ii. Fats
C. Carboxypeptidase iii. Nucleic acids
D. Glycoridases iv. Proteins, peptones and proteoses.
- A-ii, B-iii, C-i, D-iv
- A-iii, B-iv, C-ii, D-i
- A-iii, B-i, C-iv, D-ii
- A-ii, B-iii, C-iv, D-i
9. “Energy can neither be created nor destroyed although it can be converted from one form into another.” comes under which law of thermodynamics?
- First law of Thermodynamics
- Second law of Thermodynamics
- Third law of Thermodynamics
- Fourth law of Thermodynamics
10. ——————- Waves do not require medium for propagation and ———- waves require medium for their propagation.
- Mechanical, Non-mechanical
- Non-mechanical, Mechanical
- Transverse, Mechanical
- Non-mechanical, Transverse
Answer Keys:
| Ques. 1 | (b) | Ques. 6 | (d) |
| Ques. 2 | (c) | Ques. 7 | (c) |
| Ques. 3 | (b) | Ques. 8 | (d) |
| Ques. 4 | (b) | Ques. 9 | (a) |
| Ques. 5 | (a) | Ques. 10 | (a) |
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