The noble gas such as argon is used for?
A. electric arc welding B. welding brass C. underwater welding D. steel welding Correct Answer: Option A – electric arc welding
The distance between the nuclei of chlorine atoms in a chlorine molecule is 0.194 mm. The atomic radius of chlorine atom is?
A. 0.097 mm B. 0.194 mm C. 0.388 mm D. 2.388 mm Correct Answer: Option A – 0.097 mm
The shapes of CO2; H2O and CH4 respectively are?
A. bent, linear and tetrahedral B. bent, tetrahedral and linear C. linear, bent and tetrahedral D. tetrahedral, linear and bent Correct Answer: Option C – linear, bent and tetrahedral
Which of the following types of bonding does not involve the formation of new substance?
A. Metallic B. covalent C. Co-ordinate D. Electrovalent Correct Answer: Option A – MetallicProducts
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