17431 . Gypsum consists of ---------. ..

• A. $H_{2}S and C{O}_2$
• B. $Lima and H_{2}O$
• C. $CaS{O}_4 and H_{2}O$
• D. $C{O}_{s }and calcium$

View Answer	Favorite Question

Discuss in Forum

Workspace

Report

Answer: Option C

Explanation:

17432 . What is the density of pure water? ..

• A. $4g/c{m}^2$
• B. $1g/c{m}^2$
• C. $6g/c{m}^2$
• D. $9g/c{m}^2$

View Answer	Favorite Question

Discuss in Forum

Workspace

Report

Answer: Option B

Explanation:

17433 . বন-জঙ্গল ধ্বংস করার ফলে বায়ুমণ্ডলে কোন গ্যাসের পরিমাণ বৃদ্ধি পাচ্ছে? ..

• A. $CO$
• B. $C{O}_2$
• C. $S_{2}O$
• D. $CFC$

View Answer	Favorite Question

Discuss in Forum

Workspace

Report

Answer: Option B

Explanation: