प्राथमिक 1 - सामग्री एवं अवधारणाएँ

a shiny grayish-white metal of high value that heat and electricity can move through it and is used in jewelry making, electronics, etc.

चांदी

a hard material, usually made of minerals, and often used for building things

पत्थर, चट्टान

a sample, showing what the rest of the data is typically like

उदाहरण

something such as a hammer, saw, etc. that is held in the hand and used for a specific job

उपकरण, औज़ार

something that is known to be true or real, especially when it can be proved

तथ्य, वास्तविकता

scientific knowledge put into practice in a particular area, especially in industry

प्रौद्योगिकी

anything that we can hear

ध्वनि, शोर

a place where people do scientific experiments, manufacture drugs, etc.

प्रयोगशाला

a mild feeling of shock we have when something unusual happens

आश्चर्य, चौंकना

made of a hard material that forms the branches and trunks of trees

लकड़ी का, लकड़ी जैसा

a light substance produced in a chemical process that can be formed into different shapes when heated

प्लास्टिक

a valuable yellow-colored metal that is used for making jewelry

सोना