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1. 

Which type of fire extinguisher is used for petroleum fire?
A. Powder type
B. तरल प्रकार
C. सोडा एसिड प्रकार
D. फोम प्रकार
2. 

Detergents used for cleaning clothes and utensils contain?
A. bicarbonates
B.

बिसमथॅतॅस 
C.

सुल्फोनट्स 
D.

नाइट्रेट
3. 

Epoxy resins are used as
A. detergents
B.

कीटनाशकों
C.

चिपकने
D.

पतंग पुनरावर्तक
4. 

Which is/are the important raw material(s) required in cement industry?
A. Gypsum and Clay
B. चिकनी मिट्टी
C. चूना पत्थर और मिट्टी
D. चूना पत्थर
5. 

Which of the following is used for removing air bubbles from glass during its manufacture?
A. Arsenous oxide
B.

पोटेशियम कार्बोनेट
C.

सोडा पाउडर
D.

स्फतीय