Question

Personal protective devices required for safety in the labouratory include
Gloves, jewellery, Apron
Apron,Gloves,Safety spectacles
Apron, Gloves, Corrosive liqiud
Apron, jewellery,open-toed shoes.
6 A condition known as asphyxiation is caused by ------------------
oxygen displacement
fire and explosion
toxity of a gas
scald
7 To insulate fuse wire which of the following materials is commonly used?
plastic
cloth
porcelain
paper
8 The energy of radiation is given by the formula
E = hv
E = hc
E = hλ
E = he
9 The term IMPLOSION refers to --------------
bursting outward due to excessive heat
bursting inward due low internal pressure
bursting outward due to low external ressure,
bursting inward due to high internal pressure