Science Test for CBSE Class- X

WHAT IS THE OTHER NAME OF CONCENTRATION OF ORES?
ADULTERATION OF ORES
DEPLETION OF ORES
ENRICHMENT OF ORES
QUALITY OF ORES
WHICH PROCESS IS USED IN EXTRACTION OF HIGHLY REACTIVE METALS?
ROASTING
CALCINATION
ELECTROLYSIS
THERMITE REACTION
DURING REFINING,ANODE IS TAKEN AS..............................METAL?
PURE
IMPURE
BOTH
CARBONATE ORE IS CONVERTED TOMETAL OXIDE THROUGH
CALCINATION
ROASTING
THERMITE
REDUCTION
A ZINC ORE GAVE CO2 (CARBONDIOXIDE) ON TREATMENT WITH DILUTE ACID.IDENTIFY THE ORE
CALAMINE,ZNCO3
ZINC BLENDE
CUPRITE
CINNABAR
THE ROCKY MATERIAL FOUND WITH ORES IS KNOWN AS
GANG
AIRMUD
GANGUE
METALMUD
RUST IS MAINLY
HYDRATED IRON 2 OXIDE
HYDRATED IRON 1 OXIDE
HYDRATED IRON 3 OXIDE
HYDRATED IRON 4 OXIDE
THE PROCESS OF FORMING THICK LAYER OF ALUMINIUM OXIDE ON ALUMINIUM BY MAKING IT ANODE IS
THERMITE
ANODISING
CATHODISING
ALUMINOTHERMITE
CHEMICAL FORMULA OF SODIUM STEARATE IS
C17H34COO-NA
C17H35COO-NA
C18H35COO-NA
C18H14COO-NA
CHEMICAL FORMULA OF SODIUM PALMITATE IS
C15H31COO-NA
C16H35COO-NA
C16H36COO-NA
C17H35COO-NA
COMBINATION OF SOAP MOLECULES ARE
MICE
MICELLE
MECILLE
MECLLE
EXAMPLE OF DETERGENT IS
SODIUM n-DODECYL BENZENE SULPHONATE
SODIUM n-DODECYL BENZENE SULPHATE
SODIUM n-DODECYL BENZENE CHLORATE
SODIUM n-DODECYL BENZENE CARBONATE
Description:

This test paper is of Level 1,the students who solve it without any help in 3o Min's can acquire 35-40 Marks easily in CBSE Board Exams.(NOTE:It is of Level 1)

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