LDC Mixed Practice Test #742

Question 1

Variance:

Accepted Answer

Mean of (x-μ)² — σ² = E[(X-μ)²] = E[X²] - μ². Standard deviation: σ = √variance.

Answer

Σx

Answer

μ

Answer

Mean

Question 2

Microcredit, entrepreneurship and empowerment are three components of:‌​‍

Accepted Answer

Kudumbashree — Kudumbashree rests on these three pillars.‌​‍

Answer

ICDS

Answer

IRDP

Answer

NRDP

Question 3

Arrange in dictionary order: (i) Ambitious (ii) Ambiguous (iii) Ambiguity (iv) Ambition (v) Amphibians

Accepted Answer

(iii), (ii), (i), (iv), (v) — Order: Ambiguity, Ambiguous, Ambition, Ambitious, Amphibians. (iii), (ii), (iv), (i), (v).

Answer

(ii), (iii), (i), (v), (iv)

Answer

(iii), (ii), (iv), (i), (v)

Answer

(iii), (ii), (i), (iv), (v) and ending with Amphibians

Question 4

The plural of 'datum' is:‌​‍

Accepted Answer

Data — Latin plural: datum → data. ‌​‍(Modern usage often treats 'data' as singular/uncountable.)

Answer

Datae

Answer

Datumes

Answer

Datums

Question 5

A fair coin is tossed 3 times. Probability of exactly 2 heads:

Accepted Answer

3/8 — 3 ways: HHT, HTH, THH out of 8 total. P = 3/8.

Answer

1/8

Answer

2/8

Answer

4/8

Question 6

Kerala's first Deputy CM:‌​‍

Accepted Answer

R. Sankar — R. Sankar — first Deputy CM (1960-62).‌​‍

Answer

E.M.S.

Answer

C.H. Mohammed Koya

Answer

K.R. Gowri

Question 7

The Indian Councils Act 1861 was significant because it:‌​‍

Accepted Answer

Associated Indians with law-making — The 1861 Act started associating Indians with the legislative process — Indians nominated to councils.‌​‍

Answer

Gave Indians right to vote

Answer

Introduced provincial autonomy

Answer

Abolished East India Company

Question 8

A kilobyte is defined in binary as:

Accepted Answer

1024 bytes — Traditional KB = 2¹⁰ = 1024 bytes (binary); SI kB = 1000 bytes.

Answer

1000 bytes

Answer

1 million bytes

Answer

8 bytes

Question 9

'This box is ___ than that one.' (heavy)

Accepted Answer

heavier — Comparative of heavy → heavier (one-syllable ending in consonant-vowel-y).

Answer

heavy

Answer

heaviest

Answer

more heavy

Question 10

The anti-defection law is in which Schedule?‌​‍

Accepted Answer

10th — 10th Schedule (52nd Amendment, 1985) = Anti-defection provisions.‌​‍

Answer

8th

Answer

9th

Answer

11th

LDC Mixed Practice Test #742