Which one is a valid declaration of a boolean?

Which one is a valid declaration of a boolean?

boolean b1 = 1;

boolean b2 = ‘false’;

boolean b3 = false;

boolean b4 = ‘true’

Answer : C

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1) In Java, the word true is ................

A Java keyword

2) Java is a _______ language.

weakly typed

strogly typed

moderate typed

None of these

3) Literal can be of which of these data types?

integer

float

boolean

all of the mentioned

4) Which of these can not be used for a variable name in Java?

identifier

keyword

identifier & keyword

none of the mentioned

5) Which of these occupy first 0 to 127 in Unicode character set used for characters in Java?

ASCII

ISO-LATIN-1

None of the mentioned

ASCII and ISO-LATIN1