Why is sea-urchin kept in phylum Echinodermata? (i) Their outer body is covered with calcareous spines. (ii) They have muscular legs for swimming in water and walking on its surface. (iii) Their body is soft. (iv) It has tentacles on its head.

(i) Their external body is covered with calcareous spines.

Which of the following statements is correct about queen bee? (i) The queen bee does the work of feeding the larvae honey and bee bread. (ii) The queen bee does the work of keeping the hive warm. (iii) A colony holds a large number of queen bees. (iv) The bee that lives longest in the hive is the queen bee.

(iv) The queen ant is the ant that lives the longest in the nest.

Which of the following phenomena is based on the high specific heat capacity of water? (i) The temperature of sea water does not differ much between night and day. (ii) Fish do not die in a Himalayan lake in winter even though ice forms on the surface. (iii) Water pipes burst in winter. (iv) The temperature of water stays constant while it is boiling.

(i) The temperature of the sea water does not vary much between day and night.

Certain variables should be controlled in scientific experiment, why?

Because if those variables are not controlled, it is not possible to distinguish whether the change in the dependent variable is due to the independent variable or due to something else. Controlled variables make the experiment fair and the results reliable.

Write an application of QR code.

In digital payments — a QR code displayed at a shop can be scanned by a mobile phone to send the amount instantly. (It is also used to store product details, website links, tickets, or medicine information.)

Write a characteristic of the given organism on the basis of respiration. (The figure shows a tube-like sponge with pores all over its body.)

The organism in the picture is a sponge (Porifera). It does not have a separate respiratory organ — when water enters through the body pores (ostia) it takes in oxygen by diffusion across the body surface and expels carbon dioxide.

Write a function of worker bee after 21 days.

After 21 days the worker bee becomes a forager — it goes outside the hive to collect nectar, pollen and water from flowers and brings them back to the hive. (It also does guard duty at the hive entrance at this age.)

Why can't a digital clinical thermometer be used to measure the temperature of boiling water?

Because the measurement range of a clinical thermometer is only from 35^\circ\text{C} to 42^\circ\text{C}, while the temperature of boiling water is 100^\circ\text{C}. Since that is well above the limit it cannot be measured and the instrument itself may get damaged.

Write any one difference between the following figures on the basis of their working principles. (Figure A — a coil rotating between the poles of a permanent magnet, connected to a galvanometer; figure B — a wire between the poles of a horseshoe magnet, connected to a battery and a switch.)

Figure A is based on electromagnetic induction (electromagnetic induction) — when a coil rotates within a magnetic field, electricity is produced, i.e., mechanical energy is converted into electrical energy (dynamo). Figure B is based on the motor effect (motor effect) — a current-carrying wire placed in a magnetic field experiences a force and moves, i.e., electrical energy is converted into mechanical energy (motor).

Draw current-time graph of alternating current.

Graph: On the horizontal axis put time (t) and on the vertical axis put electric current (I). The curve starts from zero, rises upward to a maximum positive value, then falls to zero, then goes negative to a maximum negative value and returns to zero — thus forming a sine curve and this cycle repeats. Label: both axes, the peak value and one period (T).

Draw a well labelled diagram of electro refining process of purification of impure silver.

What should be shown in the diagram: a vessel containing an acidified silver nitrate (AgNO₃) solution as the electrolyte; the thick plate of impure silver connected to the anode (+) and the thin plate of pure silver connected to the cathode (−); both connected to a battery; anodic mud deposited at the bottom of the vessel. Labeling: Anode (impure silver), Cathode (pure silver), Electrolyte AgNO₃, Battery, Anode mud. When electric current flows, silver from the anode becomes Ag⁺ and goes into the solution and pure silver is deposited on the cathode; impurities settle down as anodic mud.

An ore contains a mixture of iron dust and zinc sulphide. Which method can be used to separate them?

Magnetic separation method. When the mixture is passed over a moving magnetic plate, the iron filings are attracted by the magnet and get separated, while zinc sulfide, being non-magnetic, is not attracted and falls to the other side.

How many questions and marks are in the SEE 2082 Science and Technology (Gandaki Province, RE-1041'GP') paper?

40 questions worth 75 marks. There are 19 of 1 mark, 14 of 2 marks and 7 of 4 marks.

Is this the real board paper?

Yes. It is the SEE 2082 paper printed for Gandaki Province, code RE-1041'GP', typed up from the original and checked by the GyanMul team.

Are the answers included?

Answers to the 19 one-mark questions are on this page (GyanMul's model answers; the NEB does not publish an answer key). Worked answers and the marking for every other question are in GyanMul Prep, free with an account.

Can I download this paper as a PDF?

Yes. Press "Print / Save as PDF" at the top of the page and choose "Save as PDF" in your browser's print window.

Secondary Education Examination · Class 10

SEE 2082 Science and Technology question paper, Gandaki Province

SEE 2082 Science and Technology (Gandaki Province, RE-1041'GP') has 40 questions worth 75 marks, with 3 hours to answer them. It has 19 of 1 mark, 14 of 2 marks and 7 of 4 marks.

The SEE examination is conducted by the National Examinations Board (NEB), Nepal. This paper was typed up from the original and checked by the GyanMul team.

Every question is given in Nepali and English, as the paper prints it.

40 questions
75 marks
3 hours
Code RE-1041'GP'

Sit this paper as a timed mock test, freeनेपालीमा पढ्नुहोस्

The account is free. Timer, marking, worked answers and help from Gurubaa, in one place.

Questions

Answers are shown for the 19 one-mark questions. They are GyanMul's model answers: the NEB does not publish an answer key, so these are not the board's answers.

Question 11 mark
Why is sea-urchin kept in phylum Echinodermata? (i) Their outer body is covered with calcareous spines. (ii) They have muscular legs for swimming in water and walking on its surface. (iii) Their body is soft. (iv) It has tentacles on its head.
सिअर्चिनलाई इकाइनोडर्मेटा फाइलममा किन राखिएको हो ? (i) तिनीहरूको बाह्य शरीर क्याल्केरसका काँडाले ढाकेको हुन्छ । (ii) पानीमा पौडन र त्यसको सतहमा हिँड्नका लागि मांसपेसीयुक्त खुट्टा हुन्छन् । (iii) तिनीहरूको शरीर नरम हुन्छ । (iv) यसको टाउकोमा टेन्टाकल्स हुन्छन् ।
Answer: (i) Their external body is covered with calcareous spines.
Question 21 mark
Which of the following statements is correct about queen bee? (i) The queen bee does the work of feeding the larvae honey and bee bread. (ii) The queen bee does the work of keeping the hive warm. (iii) A colony holds a large number of queen bees. (iv) The bee that lives longest in the hive is the queen bee.
रानी मौरीको बारेमा तलका मध्ये कुन कथन सत्य हो ? (i) रानी मौरीले लार्भालाई मह र कुट खुवाउने कार्य गर्छ । (ii) रानी मौरीले घारलाई न्यानो बनाउने कार्य गर्छ । (iii) एउटा गोलामा रानी मौरी धेरै सङ्ख्यामा हुन्छन् । (iv) घारमा सबैभन्दा लामो समयसम्म बाँच्ने मौरी रानी मौरी हो ।
Answer: (iv) The queen ant is the ant that lives the longest in the nest.
Question 31 mark
Which of the following plants has antioxidant, antimicrobial property as well as the capacity to relieve stress, depression and anxiety? (i) Turmeric (ii) Asiatic pennywort (iii) Gurjo (iv) Neem

Questions learners ask

How many questions and marks are in the SEE 2082 Science and Technology (Gandaki Province, RE-1041'GP') paper?: 40 questions worth 75 marks. There are 19 of 1 mark, 14 of 2 marks and 7 of 4 marks.
How much time is given for this paper?: 3 hours (180 minutes).
Is this the real board paper?: Yes. It is the SEE 2082 paper printed for Gandaki Province, code RE-1041'GP', typed up from the original and checked by the GyanMul team.
Are the answers included?: Answers to the 19 one-mark questions are on this page (GyanMul's model answers; the NEB does not publish an answer key). Worked answers and the marking for every other question are in GyanMul Prep, free with an account.
Can I download this paper as a PDF?: Yes. Press "Print / Save as PDF" at the top of the page and choose "Save as PDF" in your browser's print window.

Source: prep.gyanmul.com/see/past-papers/science/2082/gandaki · GyanMul Prep