Diamond ओर Pencil का गजब का Fact #shorts | Hindi Facts

Graphite is a much better conductor of heat and electricity than diamond. This is due to the fact that each carbon atom in graphite:( ग्रेफ़ाइट ऊष्मा ओर धारा का चालक होता है , क्यों ?)

The cost of 6 pencils is Rs. 30 and 12 pens is Rs. 120. Find the average cost of 50 pencils and 50 pens. 6 पेंसिल का मूल्य रु 30 और 12 कलमों का मूल्य रु120 है | 50 पेंसिल और 50 कलमों का औसत मूल्य कितना है ?

Calculate the density of diamond from the fact that it has face centered cubic structure with two atoms per lattice point and unit cell edge length of 3.569 Å.

The price of a rubber is Rs. 3. The price of 20 rubbers is equal to that of three pens. The price of a pen is equal to that of two pencils and the price of six pencils is equal to that of five markers. What is the price of one marker ? एक रबड़ का मूल्य 3 रूपए है | 20 रबडो का मूल्य तीन कलमों के मूल्य के बराबर है | एक कलम का मूल्य दो पेंसिल के मूल्य के बराबर है और छह पेंसिल का मूल्य पांच मार्कर के मूल्य के बराबर है | एक मार्कर का मूल्य कितना है ?

Sudanshu made a model of the unit cell of diamond. It resembled the unit cell of ZnS. If the unit cell of ZnS has 4 units of ZnS per unit cell. It has the same packing efficiency as ZnS. But diamond is the hardest known substance. (a) What is the number of atoms of carbon per unit cell of diamond? (b) Why diamond is the hardest known substance? (c) What is the value that Sudanshu can derive from these facts?

Two statements are given followed by two conclusions I and II. You have to consider the statements to be true, even if they seem to be at variance from commonly known facts. You are to decide which of the given conclusions definitely follows from the given statements. Indicate your answer. Statements : All pencils are rails. All rails are stations. Conclusions : I. All stations are pencils. II. Some stations are pencils.

Two statements are given in each of the following questions. followed by two onclus1ons I and II. You have to take the two statements to be true even, if they seems to be at anance from commonly known facts. Read the conclusions and then decide which of the given conclusion logically follows the given two statement. disregarding the known facts. Statements I. Some scales are pencils. II. Some erasers are pencils. Conclusions I. Some pencils are erasers. II. Some pencils are scales.