Which of the following is not a component of a chlorophyll : [66th BPSC Re-exam] 1) Calcium 2) Carbon 3) Magnesium 4) Hydrogen

Water in plants is transported by : [66th BPSC Re-exam] 1) Xylem 2) Epidermis 3) Phloem 4) Cambium

The chemical used for destroying fungi in water tank is : [66th BPSC Re-exam] 1) Nitric Acid 2) Zinc Sulphate 3) Magnesium Sulphate 4) Copper sulphate

Natural rubber is a polymer of : [66th BPSC Re-exam] 1) Isoprene 2) Vinyl Acetate 3) Styrene 4) propene

The major component of CNG is : [66th BPSC Re-exam] 1) CO2 2) N2 3) H2 4) CH4

The components of Acid rain are : [66th BPSC Re-exam] 1) Hno3 2) H2so4 3) CO2 4) Both A and B

The PH value of Water is : [66th BPSC Re-exam] 1) 4 2) 7 3) 12 4) 18

The chemical formula for heavy water is : [66th BPSC Re-exam] 1) H2o 2) N2O 3) D2O 4) Cuo

An example of Antibiotic medicine is : [66th BPSC Re-exam] 1) Aspirin 2) Paracetamol 3) Chloroquine 4) Penicilin

The chemical formula of Sapphire (Ruby) is ? [66th BPSC Re-exam] 1) Al2O3 2) AL3O2 3) N2O 4) NO2