Q. The hybrid rocket propellant consists of
A) Acrylic rubber and liquid nitrogen tetraoxide.
B) Polyurethane and ammonium perchlorate.
C) Nitroglycerine and nitrocellulose.
D) Liquid hydrogen and liquid oxygen.
Explanation
(d)
${Sr}^{2 +} - red$
${Mg}^{2 +} - \ violet$
${Al}^{2 +} - \ pink$
${Ba}^{2 +} - \ blue$
Alizarin is a mordant dye. It gives different colour to the fabric with different metal ions.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.