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গ্রাফাইটে কোন ধরণের সংকরায়ণ বিদ্যমান? (What type of hybridization is present in graphite?)
12 গ্রাম বিশুদ্ধ কার্বন -12 এ কার্বন পরমাণুর সংখ্যা হলো- (The number of carbon atoms in 12 g of pure carbon -12 is)
অক্সিজেনের ব্যাপনের হার কার্বন ডাইঅক্সাইডের চেয়ে বেশি, কারণ-i. অক্সিজেনের আণবিক ভর কার্বন ডাইঅক্সাইডের চেয়ে কমii. অক্সিজেনের ঘনত্ব কার্বন ডাইঅক্সাইডের চেয়ে কমiii. অক্সিজেন কার্বন ডাইঅক্সাইডের চেয়ে বেশি সক্রিয় নিচের কোনটি সঠিক?
Which of the following statements is NOT correct about Carbon and its allotropes? I. Graphite contains delocalized electrons. II. The hybridization state of carbon in fullerene is sp2. III. The number of carbon compounds is very large because carbon is tetravalent.
All the forms of matter except gases emit electromagnetic radiation continuously. The gases which electrically or thermally excited emit a certain wavelength only, then which of the following is/are true about the process (i) The spacing between the atoms in the other forms of matter is high than in gas (ii) The spacing between the atoms in gases is high than the other forms of matter (iii) The energy of the emitted radiation depends on the spacing between the atoms (iv) The wavelength of the emitted radiation depends on the spacing between the atoms 
A collection of N atoms is exposed to a strong resonant electromagnetic radiation with Ng atoms in the ground state and N atoms in the excited state, such that Ng + Ne = N. This collection of two-level atoms will have the following population distribution
What does the term ‘carbon count’ means? 1. A measure of the amount of carbon dioxide you produce through your lifestyle every day. 2. A measure of the amount of carbon present on Earth. 3. A measure of the amount of carbon and carbon dioxide on Earth. Select the correct answer using the code given below.
অল্প বায়ুতে জ্বালানি পোড়ালে উৎপন্ন হয়-i. বিষাক্ত কার্বন মনোঅক্সাইডii. বিষাক্ত কার্বন ডাইঅক্সাইডiii. বিষাক্ত কার্বন কণানিচের কোনটি সঠিক?
Consider the following statements in connection with deflection-type and null-type instruments: 1. Null-type instruments are more accurate than the deflection-type ones. 2. Null-type of instrument can be highly sensitive compared to a deflection-type instrument. 3. Under dynamic conditions, null-type instruments are less preferred to deflection-type instruments. 4. Response is faster in null-type instruments as compared to deflection-type instruments. Which of the above statements are correct?
Which option is correct about IUPAC nomenclature for branched-chain saturated hydrocarbon? The longest chain of carbon atoms in the structure of the compound is found first. The position of the alkyl group is indicated by writing the number of carbon atoms to which it is attached.