NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension: Questions 990 - 993 of 1058

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Question number: 990

» Mathematics » Trigonometry

MCQ▾

Question

If the angle of elevation of a cloud from a point h m above a lake is B and the angle of depression of its reflection in the lake is a, then the height of the cloud is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 991

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

A compound ‘X’ is an alkane. It is the main constituent of natural gas and abundantly found in marshy areas. In presence of sunlight, it reacts with chlorine and forms chloroform, but in absence of sunlight, it does not reacts with chlorine. Identify ‘X’.

Choices

Choice (4) Response

a.

Ethane

b.

Methane

c.

Propane

d.

Butane

Question number: 992

» Mathematics » Trigonometry

MCQ▾

Question

If cot Equation Equation , then the value of sin A x cos A is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 993

» Mathematics » Trigonometry

MCQ▾

Question

Equation is a right angled at Q. If X and Y are the mid-points of the sides PQ and QR respectively, then which one of the following is correct?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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