Q: For a constant sound wave, what is the time interval between successive crests per second called?
What is the answer?

A: frequency

Q: The salad condiment comprising oil and vinegar, often reddened with parika and tomato, popularized/produced first in the 1950s is '(What?) dressing'?
What is the answer?

A: french

Q: Nancy Davis and Jane Wyman were the wives of which late actor?
What is the answer?

A: ronald reagan

Q: What type of food is 'Gravadlax'?
What is the answer?

A:
fish