Which of the following is an incorrect Match ?
(A) Igneous Mineral : Mica
(B) Gemstone : Sapphire
(C) Ore : Blister copper
(D) Alloy : German silver

Which of the following is incorrect match of W.B.Cs with its functions :-

Match the following (a) (b) (c ) (d)

Which of the following match is/are correct regarding B, Al, C and S elements?

Given a+b+c+d = 0 which of the following statement is incorrect

Given a +b+c+d=0 which of the following statement is incorrect

Which of the following is incorrect? a. sintheta=-1//5 b. costheta=1 c. s e ctheta=1//2 d. t a ntheta=1

Which of the following is an incorrect match? (a) Radula- Feeding (b) Ctenidia-Respiration (c) Organ of Bojanus-Excretion (d) Keber's organ Pearl formation

Which of the following match is correct? (a) Cockroach-crustacea (b) Pila-Pelecypoda (c) Spider-arachnida (d) Unio-gastropoda

Which one of the following is a correct match? (a) Filariasis- Taenia solium (b) Encephalitis - Culex (c) Malaria - Phlebotomus (d) Kala-azar- Anopheles

Which of the following statements is/are incorrect? (a) Cassiterite is not the ore of tin (b) Metallurgy is a process of mixing of ore (c) concentration of chromite ( FeO.Cr_2O_3 ) is done by magnetic separation (d) ZnS with depressant NaCN forms Na_2[Zn(CN)_4]