Where the questions lead to questions

Which word can you eliminate ?
Car
Plane
Bike
Boat
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[car: because it has a short vowel; bike: because it is not motorized; boat: because it doesn't have wheels]

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If you buy 3 trousers worth 23€30 each with a 50€ note, how much change are you left with?
13,1€
12,2€
14,6€
11,3€

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[are these Euros?  I see 23.30 * 3 =  69.90 which won't result in change for a 50]

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Solve the following analogy :
LAVA is to VOLCANO what WATER is to ?
freeze
mountain
valley
chimney
source
lake

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[typical response is lake, but a volcano doesn't technically contain the lava.  Clouds would be a better choice here.  Source would be good, but there's the lack of definition]

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Please mark the word not matching the others :
Whale
Shark
Herring
Dolphin
Pike

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[whale is a common answer for it is a mammal -- please note that there is a dolphin fish, also common would be pike for it is a freshwater fish as opposed to oceanic; shark would work because they are only jaws, no other bones]

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This shape was turned over upside-down, then swivelled, what is the result ?

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["swiveled"?  What's swiveled?]

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Which is the missing drawing ?

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[I met my match here]

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Find the word written in the direct direction (of the needles of a watch) as well as the missing letter :

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["written in direct direction", you're losing me here -- not a clue]

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Which shape does not match the others ?
Circle
Cube
Triangle
Square
Rhombus

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[cube is 3 dimensional; circle has no sides and not vertices]

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Which face part does not match the others ?
Eye
Ear
Cheek
Nose
Eyebrow

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[there is a hinted symmetry here; Whoopi Goldberg would fail -- nose (one); eyebrow typically considered hair is a non-feature]

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Which word does not match the others ?
Copper
Tin
Iron
Bronze
Lead

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[bronze is an alloy, of course; lead not used in weapon usage but doesn't corrode (and floats like great gravy)

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