Spelling and Odd One Out

All options except Tibetan are names of the Seven Summits - the highest mountains on each continent. Aconcagua (South America), Denali (North America), Elbrus (Europe), Everest (Asia), Vinson (Antarctica), Kilimanjaro (Africa), Carstensz (Australia/Oceania). 'Tibetan' is a regional adjective, not a mountain name.

The word 'feedback' (6 letters) is significant because it contains all the first six letters of the alphabet in order: a, b, c, d, e, f. Reading 'feedback' left to right gives f-e-e-d-b-a-c-k, which clearly shows these six letters are all present. It is indeed a relatively short word demonstrating this property.

'Misspelled' is the correct spelling. The base verb is 'misspell' (with double 's' because the prefix 'mis-' ends with 's' and the root 'spell' starts with 's'). The past tense adds '-ed', making 'misspelled' with double 's' and double 'l'. This is ironically the most commonly misspelled word.

Typewriter uses only letters from the top row of a QWERTY keyboard (T, Y, P, E, W, R, I). While Write and Qwerty also use only top-row letters, Typewriter is the longest such word. Professor is misspelled and uses letters from multiple rows.

This linguistic curiosity is true: the word 'queue' is pronounced /kjuː/. When you remove the last four letters ('euee'), you're left with 'q', which is also pronounced /kjuː/. This makes 'queue' a unique example of English orthography where most letters are silent.

Copper, Zinc, Aluminium, and Iron are all pure chemical elements. Brass is an alloy made of copper and zinc, not a pure element. This makes it the odd one out.

Marigold, Rose, Lily, and Lotus are all flowers. Apple is a fruit (the edible part of the plant), not a flower. This makes it different from the others.

January, May, July, and August are all months with 31 days. November has only 30 days, making it the odd one out based on the number of days.

Pistol, Gun, Rifle, and Cannon are all firearms that discharge projectiles. Sword is a bladed weapon that does not use explosive propulsion. This makes it the odd one out.

The question asks to identify the word that doesn't belong. 'Rancid', 'Tainted', and 'Sour' all describe unpleasant or spoiled qualities - typically used for food or smells that have gone bad. 'Toothsome' means pleasant or agreeable to the taste - it's the only positive word in the group. While the other three describe something bad or spoiled, toothsome describes something good or enjoyable.

Among apple, banana, guava and mango, only the last named has one big seed.