तलका प्रश्नको संक्षिप्त उत्तर दिनुहोस् । Write short answer of the following questions,
10. संधियता भनेको के हो ? संधियताको कुनै ५ ओटा महत्वहरू उल्लेख
गर्नुहोस् । What is tederalism? Write any 5 importance of federalism. .
।। दिन प्रतिदिन विनास हुदै गईरहेका राष्ट्रिय सम्पदाहरूको संरक्षण गर्न आवश्यक
छ । किन हामिले हाम्रा राष्ट्रिय सम्पदाहरूको संरक्षण गर्नु पर्छ ? कुनै ६
कारण-हरू लेख्नुहोस् । It is necessary to protect our national heritages as they are
getting destroyed day by day. Why should we preserve our national heritages?
Write any six reasons.
12. मानौ तपाईको एकजना साथी लागुऔषध दुर्व्यसनीमा छ । तपाई उसलाई
कसरी लागु औषध दुर्व्यसन त्याग्नका लागी विश्वस्त पार्नु हुन्छ ? कुनै ६
बुदामा उत्तर लेख्नुहोस् । Suppose, one of your friends is a drug addict. How can
you convince him/her to give up drug abuse? Write your answer in any six points.
13. नेपालको शाह वंशीय राजतन्त्रको इतिहासमा पृथ्वीनारायण शाह प्रजातान्त्रीक
राजा थिए । कसरी ? यस भनाईलाई पुष्टि गर्ने कुनै ६ ओटा तर्क लेख्नुहोस् ।​

what is the answer

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals

answer; role-taking;

answer; shared meaning;