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Class 10 Compulsory Science and Technologyकक्षा १० विज्ञान तथा प्रविधि — SEE notes & solutions

class 10see

Class 10 SEE Compulsory Science and Technology Question Paper 2080 (SEE) – Solved

NEB

2080

Class 10 (SEE)

Compulsory Science and Technology

Full Marks: 75

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

"समूह 'क'"

तलका प्रश्नहरूको ठिक विकल्प छानी उत्तरपुस्तिकामा लेख्नुहोस् : Choose the best alternative of the following questions and write in the answer sheet:

[10 × 1 = 10]

10.

पास्कलको नियमका बारेमा एउटा तथ्य र दुइओटा कथनहरू दिइएका छन् ।
A fact and two statements about Pascal's law are given below:

तथ्य: (Fact) - कुनै बन्द भाँडोमा रहेको तरललाई एकातिरबाट चाप दिँदा उक्त चाप चारैतिर समान रुपले प्रसारित हुन्छ ।
The pressure given on an enclosed liquid is equally transmitted in all the directions by the liquid.

कथन (Statements)-
a) यो नियम पनडुब्बीको कार्यविधिमा प्रयोग हुन्छ ।
The law is applicable in functioning of a submarine.
b) यो नियम चारपाङ्ग्रे वाहनहरूको ब्रेकिङ प्रणालीमा प्रयोग हुन्छ ।
The law is applicable in braking system of four wheelers.

i. तथ्य र दुवै कथनहरू सही छन् ।
Fact and both the statements are correct.
ii. तथ्य सही छ तर दुवै कथनहरू गलत छन् ।
Fact is correct but both the statements are incorrect.
iii. तथ्य र कथन 1 सही छन् तर कथन 2 गलत छ ।
Fact and statement 1 are correct but statement 2 is incorrect.
iv. तथ्य र कथन 2 सही छन् तर कथन 1 गलत छ ।
Fact and statement 2 are correct but statement 1 is incorrect.

[1]

"समूह 'ख'"

तलका प्रश्नहरूको अति छोटो उत्तर लेख्नुहोस् : Write very short answer to the following questions:

[9 × 1 = 9]

"समूह 'ग'"

तलका प्रश्नको छोटो उत्तर लेख्नुहोस् : Write short answer to the following questions:

[14 × 2 = 28]

14.

सँगैको तालिकामा एक किसिमको हाइड्रोकार्बनको होमोलोगस शृङ्खलाको एउटा उदाहरण दिइएको छ, जहाँ क्र.सं 2 र 3 मा क्रमश: वास्तविक यौगिकको सट्टा X र Y दिइएका छन् ।
A homologous series of a type of hydrocarbon is given in the table alongside. Where, X and Y are given in serial number 2 and 3 instead of the real compounds.

क्र.सं. (S.N.) होमोलोगस शृङ्खला (Homologous series)
1. \( \mathrm{CH_4} \)
2. X
3. Y
4. \( \mathrm{CH_3CH_2CH_2CH_3} \)

i. X मा रहेको एउटा हाइड्रोजन परमाणुलाई -OH ले विस्थापित गर्दा बन्ने यौगिकको अणु संरचना लेख्नुहोस् ।
Write molecular structure of the compound formed when one hydrogen atom of X is displaced by -OH.

ii. Y को अणुमा रहेका कुनै दुईओटा सँगैका कार्बनबाट एक एकओटा हाइड्रोजन परमाणु निकाल्दा बन्ने यौगिकको संरचनासूत्र लेख्नुहोस् ।
Write the structural formula of the compound formed by the removal of one hydrogen atom from two adjacent carbon atoms of Y.

[2]

"समूह 'घ'"

तलका प्रश्नहरूको लामो उत्तर लेख्नुहोस् : Write long answer to the following questions:

[7 × 4 = 28]