The substance used as a smoke screen in warfare is___________________?
Correct answer: B. SiCl4
- A. C2H2
- B. SiCl4
- C. P2O5
- D. PCl5
Explanation
Silicon tetrachloride, SiCl4, reacts rapidly with atmospheric moisture to produce finely divided silica and hydrogen chloride fumes, forming a dense smoke screen. The other phosphorus compounds do not represent the standard smoke-screen substance here.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Increasing sulphur content in pig iron tends to make it ________________?
Fahrenheit and Centigrade scales have the same readings at _____________________?
The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?
Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?
Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?
Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?