All books are boards (A) + All boards are dusters (A) = All books are dusters (A) ⇒ Conversion ⇒ Some dusters are books (I), Hence, Ist doesn’t follow. All books are boards (A) ⇒ Conversion ⇒ Some boards are books (I), Hence, IInd doesn’t follow No book is a pencil (E) ⇒ Conversion ⇒ No pencil is a book (E) + All books are boards (A) ⇒ Some boards are not pencils(O*). Hence IIIrd follows. All boards are dusters (A) + No duster is an eraser (E) ⇒ No board is an eraser (E) ⇒ Conversion ⇒ No eraser is a board ⇒ I.I ⇒ Some erasers are not boards (O*). Hence IVth also follows. Alternate Method-
Which gas is produced in the Haber Process?
Which substance is used to dissolve noble metals?
Soap is prepared by boiling caustic soda with -
Whose experiments supports Abiotic synthesis?
What happens when camphor is heated?
How many electrons are involved in the oxidation by KMnO4 in basic medium
From which source is the purple dye known as litmus solution extracted?
Sphalerite is an ore/mineral of -
Why is diamond significantly harder than graphite?
Lexan is a man-made polymer used for making