1. Benzoic acid is found in which fruit?
a) Plum b) Banana c) Ripe olive d) Jack fruit
2. Which PH value is suitable for human skin?
a) 3.0-4.2 b) 4.8-5.5 c) 7.43—7.45 d) 7.5-8.1
3. Which one is used to make powder shape of detergent?
a) NaOH b) NaCl c) Na2SO4 d) R-COONa
4. Which is used to ripen fruits?
a) Formalin b) Acetylene c) Sodium benzoate d) Caustic Soda
5. Which one is the main component of glass cleaner?
a) Ca(OCI)Cl b) Са(ОН)2 c) NaOH d) NH3
6. Which is the formula of bleaching powder?
a) Са(ОН)2 b) NaHCO3 c) Ca(OCI)CI d) NH4HCO3
7. Which one is the formula of soap?
a) C19H39COONa b) C17H35 COOK c) C11H21COONa d) (C17H35COO)2Ca
8. Which acid is present in soft drinks?
a) Acetic acid b) Carbonic acid c) Carbolic acid d) Citric acid
9. Formula of soda ash is –
a) CaO b) Na2CO3 c) CaCO3 d) NaHCO3
10. Who is responsible for killing germs by bleaching powder?
a) [0] b) [H] c) [CI] d) [HCH