Which of the following statements is not correct
Which of the following statements is not correct Options (a) silicon is extensively used as a semiconductor (b) Carborundum is…
7 years ago
S and Some P Block Elements
Which of the following is a metalloid
Which of the following is a metalloid Options (a) C (b) Si (c) Ge (d) Sn Correct Answer: GeExplanation:No explanation…
7 years ago
In graphite C atom is in …state
In graphite C atom is in …state Options (a) sp³ (b) sp (c) sp² (d) none of these Correct Answer:…
7 years ago
White lead is
White lead is Options (a) Pb₃O₄ (b) PbO (c) 2PbCO₃.Pb (OH)₂ (d) Pb(CH₃COO)₂.Pb(OH)₂ Correct Answer: 2PbCO₃.Pb (OH)₂Explanation:No explanation available. Be…
7 years ago
The adjacent sheets are bonded together in graphite with
The two adjacent sheets are bonded together in graphite with Options (a) van der waals forces (b) ionic bonds (c)…
7 years ago
In laboratory burners , we use
In laboratory burners , we use Options (a) producer gas (b) oil gas (c) gobar gas (d) coal gas Correct…
7 years ago
Carbogen is
Carbogen is Options (a) pure form of carbon (b) COCl₂ (c) mixture of CO and CO₂ (d) mixture of O₂…
7 years ago
Which statement is correct
Which statement is correct Options (a) silicon hybride catches fire on exposure to air (b) silicon halides are not easily…
7 years ago
By passing air over red hot coke the gas obtained is
By passing air over red hot coke the gas obtained is Options (a) coal gas (b) water gas (c) oil…
7 years ago
At room temperature the solid compound is
At room temperature the solid compound is Options (a) CO₂ (b) SiO₂ (c) NO₂ (d) SO₂ Correct Answer: SiO₂Explanation:Silicon dioxide…
7 years ago